Company lists · Data refreshed September 2026

Top 25 B2B event marketing agencies based in Washington, United States

Name: B2B event marketing agencies based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 7, 2026 80 companies tracked

RevenueBase identified 80 B2B event marketing agencies headquartered in Washington, United States as of September 2026 and tracks 735 professional contacts across them, including 213 with verified work emails. New York is the largest hub.

This list covers B2B event marketing agencies 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 7, 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 7, 2026 86% judged on-target in blind review

80Companies

735Contacts tracked

213Verified emails

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The 25 largest B2B event marketing agencies based in Washington, United States

Ranked by team size

Top 25 of 80 B2B event marketing agencies based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 7, 2026. RevenueBase Smart Search rates how each company's information relates to B2B event marketing agencies: 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	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	51-200	135 contacts →
	“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: company website · checked Sep 7, 2026
2	Linder Global Events	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	75 contacts →
	“Linder is a trusted global events agency that plans, promotes, and produces impactful experiences for Fortune 100 companies and leading nonprofits worldwide.” Source: company website · checked Sep 7, 2026
3	SIDEM	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	n/a	47 contacts →
	“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: company website · checked Sep 7, 2026
4	E.J. Krause & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	51-200	40 contacts →
	“For more than 30 years, E.J.” Source: company website · checked Sep 7, 2026
5	Trivision	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	33 contacts →
	“TriVision is an award-winning, full-service marketing agency helping organizations communicate with clarity and create with impact.” Source: company website · checked Sep 7, 2026
6	The Calpro Group, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	n/a	31 contacts →
	“TCG offers over 25 years of experience in all aspects of the hospitality, meeting planning and tradeshow industry.” Source: company website · checked Sep 7, 2026
7	Fiercemarkets	Strong evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	51-200	21 contacts →
	“FierceMarkets, a leader in B2B e-media, helps business marketers reach targeted decision-makers through our portfolio of email newsletters, websites, webinars, and live events…” Source: company website · checked Sep 7, 2026
8	ICE Factor	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	21 contacts →
	“At ICE Factor, we are more than just an experiential marketing agency-we're your strategic partner in crafting unforgettable brand experiences.” Source: company website · checked Sep 7, 2026
9	Stratus Firm	Indirect evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	18 contacts →
	“At Stratus®, we create high-impact experiences that transcend the ordinary.” Source: company website · checked Sep 7, 2026
10	Frontrunner Productions	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	14 contacts →
	“Frontrunner Productions \| Washington, DC Festival & Event Production Specialists Producing iconic moments through innovative festivals and high-profile events.” Source: company website · checked Sep 7, 2026
11	Future View Productions, LLC	Partial evidence	Washington, United StatesHQ checked Sep 7, 2026	11-50	14 contacts →
	“Our mission is to provide next level production services that elevate our clients’ brand by creating unforgettable events onsite, online and onstage.” Source: company website · checked Sep 7, 2026
12	Harbinger	Strong evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	201-500	14 contacts →
	“Harbinger is an experiential marketing agency that produces in-person events, digital experiences, and media engagement for the world's leading personalities, brands, and…” Source: company website · checked Sep 7, 2026
13	Nouveau	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	14 contacts →
	“NOUVEAU is a full-service production and events company, specializing in the producing of live events, domestic and international conferences, procurement of entertainment…” Source: company website · checked Sep 7, 2026
14	Decibel Events	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	12 contacts →
	“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: company website · checked Sep 7, 2026
15	RIVE	Indirect evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	11 contacts →
	“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: company website · checked Sep 7, 2026
16	LAI Live	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	9 contacts →
	“We’re LAI Live-a full-service, creative production agency that transforms ideas into standout live events.” Source: company website · checked Sep 7, 2026
17	Erin Leonard Events	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	8 contacts →
	“Erin Leonard Events (ELE) designs high-energy, dynamic, engaging events.” Source: company website · checked Sep 7, 2026
18	RGI Events	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	7 contacts →
	“RGI is an award-winning, special events production firm + design atelier, connecting organizations to audiences, through the power of shared experiences.” Source: company website · checked Sep 7, 2026
19	Zotex Media	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	7 contacts →
	“At Zotex Media, we drive growth for B2B local service-focused businesses-especially commercial cleaning and janitorial firms-through targeted, high-impact lead-generation…” Source: company website · checked Sep 7, 2026
20	Precision Meetings & Events, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	6 contacts →
	Source: company website · checked Sep 7, 2026
21	Four Corners Strategies	Indirect evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	5 contacts →
	“At Four Corners Strategies, we turn ideas into extraordinary experiences through strategic vision, creativity, and flawless execution.” Source: company website · checked Sep 7, 2026
22	Impact Collective	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	5 contacts →
	“IMPACT Collective is an award-winning event and venue management firm based at The District Wharf in Washington, DC.” Source: company website · checked Sep 7, 2026
23	POP By Christine	Indirect evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	4 contacts →
	“Headquartered in DC, POP!” Source: company website · checked Sep 7, 2026
24	Marissa Sams Events	Partial evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	11-50	4 contacts →
	“Marissa Sams Events (MSE) is a full-service agency filling gaps in event planning.” Source: company website · checked Sep 7, 2026
25	The Brand Xperience Lounge	Indirect evidence	Washington, DC, United StatesHQ checked Sep 7, 2026	1-10	3 contacts →
	“We understand that in today’s fast-paced world, you need to grab people’s attention, make a bold statement, and leave an unforgettable impression all in one sitting.” Source: company website · checked Sep 7, 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: B2B event marketing agencies. 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 B2B event marketing agencies.
Partial evidence: Its own public description names part of B2B event marketing agencies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name B2B event marketing agencies. 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 80 B2B event marketing agencies based in Washington, United States

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B2B event marketing agencies based in Washington, United States at a glance

As of Sep 7, 2026

29.0%Verified-email coverage

9.2Average contacts per company

1-10Median size (employees)

485.0%Largest-city concentration · New York

Sep 7, 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 this city, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 80 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 B2B event marketing agencies, 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 “B2B event marketing agencies”. 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 B2B event marketing agencies), 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 B2B event marketing agencies, 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, 213 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 7, 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.

B2B event marketing agencies 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 B2B event marketing agencies, 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 B2B event marketing agencies are there based in Washington, United States?

RevenueBase identified 80 B2B event marketing agencies 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 B2B event marketing agencies?

New York leads with 388 headquartered companies, followed by Los Angeles (239) and Chicago (185).

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 213 verified decision-maker contacts tracked across these 80 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 7, 2026.

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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.