Company lists · Data refreshed September 2026

Top 25 Conference planning companies based in Washington, United States

Name: Conference planning companies based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 117 companies tracked

RevenueBase identified 117 conference planning companies headquartered in Washington, United States as of September 2026 and tracks 873 professional contacts across them, including 259 with verified work emails. New York is the largest hub.

This list covers conference planning companies headquartered in Washington, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 19, 2026 86% judged on-target in blind review

117Companies

873Contacts tracked

259Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest conference planning companies based in Washington, United States

Ranked by team size

Top 25 of 117 conference planning companies based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to conference planning companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Markham	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	135 contacts →
	Indirect evidence “Markham is a creative events agency with a passion for crafting strategic, immersive, and unforgettable experiences for brands, businesses, and organizations that want to make a…” Source: RevenueBase Database · checked Sep 19, 2026
2	Linder Global Events	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	75 contacts →
	Indirect evidence “Linder is a trusted global events agency that plans, promotes, and produces impactful experiences for Fortune 100 companies and leading nonprofits worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
3	SIDEM	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	47 contacts →
	Partial evidence “SIDEM is a full-service creative event planning and production company designed to offer clients a strategic, comprehensive, highly customized, one-stop solution for their event…” Source: RevenueBase Database · checked Sep 19, 2026
4	E.J. Krause & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	51-200	40 contacts →
	Indirect evidence “For more than 30 years, E.J.” Source: RevenueBase Database · checked Sep 19, 2026
5	Trivision	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	33 contacts →
	Indirect evidence “TriVision is an award-winning, full-service marketing agency helping organizations communicate with clarity and create with impact.” Source: RevenueBase Database · checked Sep 19, 2026
6	The Calpro Group, INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	n/a	31 contacts →
	Partial evidence “TCG offers over 25 years of experience in all aspects of the hospitality, meeting planning and tradeshow industry.” Source: RevenueBase Database · checked Sep 19, 2026
7	Global DMC Partners	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Global DMC Partners is the largest global network of independent destination management companies and creative event experts serving event and meeting planners worldwide.” Source: RevenueBase Database · checked Sep 19, 2026
8	Meeting Management Services MMS	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	23 contacts →
	Indirect evidence “Independently owned, independently minded, beholden to no one but our clients.” Source: RevenueBase Database · checked Sep 19, 2026
9	Stratus Firm	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “At Stratus®, we create high-impact experiences that transcend the ordinary.” Source: RevenueBase Database · checked Sep 19, 2026
10	Future View Productions, LLC	Indirect evidence	Washington, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Our mission is to provide next level production services that elevate our clients’ brand by creating unforgettable events onsite, online and onstage.” Source: RevenueBase Database · checked Sep 19, 2026
11	Frontrunner Productions	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Indirect evidence “Frontrunner Productions \| Washington, DC Festival & Event Production Specialists Producing iconic moments through innovative festivals and high-profile events.” Source: RevenueBase Database · checked Sep 19, 2026
12	Nouveau	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “NOUVEAU is a full-service production and events company, specializing in the producing of live events, domestic and international conferences, procurement of entertainment…” Source: RevenueBase Database · checked Sep 19, 2026
13	Rendezvous	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	14 contacts →
	Indirect evidence “We love what we do.” Source: RevenueBase Database · checked Sep 19, 2026
14	Decibel Events	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	12 contacts →
	Indirect evidence “Decibel Events is a Washington, DC-based event production and management firm specializing in high-stakes events for federal agencies, Fortune 500 corporations, and national…” Source: RevenueBase Database · checked Sep 19, 2026
15	RIVE	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	11 contacts →
	Indirect evidence “At RIVE, we design and produce powerful one-of-a-kind, in-person and digital experiences that help your brand make a deeper connection and forge a lasting impression.” Source: RevenueBase Database · checked Sep 19, 2026
16	Preeti Exclusive Events	Partial evidence	Washington, United StatesHQ checked Sep 19, 2026	1-10	11 contacts →
	Partial evidence “A mainstay in the wedding industry since its inception in 2004, Preeti Exclusive Event Planning quite simply makes magic happen.” Source: RevenueBase Database · checked Sep 19, 2026
17	LAI Live	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Indirect evidence “We’re LAI Live-a full-service, creative production agency that transforms ideas into standout live events.” Source: RevenueBase Database · checked Sep 19, 2026
18	Scott Circle Events	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	9 contacts →
	Partial evidence “Scott Circle Events conceives, designs, executes and manages events and conferences that offer attendees a seamless, engaging experience that represents the vision of the…” Source: RevenueBase Database · checked Sep 19, 2026
19	Erin Leonard Events	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	8 contacts →
	Indirect evidence “Erin Leonard Events (ELE) designs high-energy, dynamic, engaging events.” Source: RevenueBase Database · checked Sep 19, 2026
20	RGI Events	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	7 contacts →
	Indirect evidence “RGI is an award-winning, special events production firm + design atelier, connecting organizations to audiences, through the power of shared experiences.” Source: RevenueBase Database · checked Sep 19, 2026
21	First Watch Strategies & Events	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	6 contacts →
	Indirect evidence “First Watch is a large-scale special event firm committed to working with organizations, agencies, and stakeholders in both the private and public sectors to design and execute…” Source: RevenueBase Database · checked Sep 19, 2026
22	Precision Meetings & Events, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	6 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
23	Four Corners Strategies	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “At Four Corners Strategies, we turn ideas into extraordinary experiences through strategic vision, creativity, and flawless execution.” Source: RevenueBase Database · checked Sep 19, 2026
24	A. Dominick Events	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Indirect evidence “Since our inception in 2005, we have become a force in the DC event industry.” Source: RevenueBase Database · checked Sep 19, 2026
25	Impact Collective	Indirect evidence	Washington, DC, United StatesHQ checked Sep 19, 2026	11-50	5 contacts →
	Indirect evidence “IMPACT Collective is an award-winning event and venue management firm based at The District Wharf in Washington, DC.” Source: RevenueBase Database · checked Sep 19, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: conference planning companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names conference planning companies.
Partial evidence: Its own public description names part of conference planning companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name conference planning companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 117 conference planning companies based in Washington, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 259 reachable decision-makers.

Free signup · no credit card

View the full list →

Conference planning companies based in Washington, United States at a glance

As of Sep 19, 2026

29.7%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

356.4%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 117 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among conference planning companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Washington, United States whose own description of what they do matches “conference planning companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names conference planning companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among conference planning companies, and records with no verified work email. Companies headquartered outside Washington are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 259 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Conference planning companies by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names conference planning companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many conference planning companies are there based in Washington, United States?

RevenueBase identified 117 conference planning companies headquartered in Washington, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Markham, headquartered in Washington, tops this list with the largest team on record.

Which city has the most conference planning companies?

New York leads with 417 headquartered companies, followed by Los Angeles (229) and Chicago (191).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 259 verified decision-maker contacts tracked across these 117 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.

Ready to reach these companies? Verified emails and direct dials for all 117 conference planning companies based in Washington, United States. Start with a free account, no credit card.

Download this list →

Related lists

Conference planning companies by geography

Browse the directory

Browse: Companies home · Conference planning companies in United States · All United States lists · All Conference planning companies lists · New lists

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.