Company lists · Data refreshed September 2026

Top 25 Nonprofit event management consultants based in Washington, United States

Name: Nonprofit event management consultants based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 158 companies tracked

RevenueBase identified 158 company matches for nonprofit event management consultants associated with Washington, United States as of September 2026 and tracks 1,772 professional contacts across them, including 756 with verified work emails. Across the United States, New York is the largest hub for this category (311 companies); Washington has 158.

This list covers company matches for nonprofit event management consultants associated with Washington, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built

158Companies

1,772Contacts tracked

756Verified emails

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The 25 largest nonprofit event management consultants based in Washington, United States

Ranked by team size

Top 25 of 158 company matches for nonprofit event management consultants based in Washington, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Nonprofit Hr, Powered By Onedigital	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	10001+	300 contacts →
	Exact match “Nonprofit HR was founded with one goal in mind: to strengthen the social impact sector by strengthening its people.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2	Arabella Advisors	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	201-500	227 contacts →
	Exact match “Arabella Advisors is a professional services firm that provides administrative, operational, and strategic support to nonprofits, foundations, and individual donors.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3	M R	Exact match	Washington, United StatesHQ recorded Sep 29, 2026	51-200	208 contacts →
	Exact match “We are M+R.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4	ORR Group	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	51-200	99 contacts →
	Exact match “Orr Group was born out of a need for event management and fundraising support in the philanthropic sector.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5	Linder Global Events	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	11-50	75 contacts →
	Exact match “Linder is a trusted global events agency that plans, promotes, and produces impactful experiences for Fortune 100 companies and leading nonprofits worldwide.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6	Avalon Consulting Group	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	51-200	74 contacts →
	Exact match “Avalon is a full-service fundraising consulting agency helping nonprofits realize the full potential of their direct marketing programs through multi-channel fundraising…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7	Lautman Maska Neill & Company	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	51-200	64 contacts →
	Exact match “Lautman Maska Neill & Company is an award-winning direct response consulting firm specializing in fully-integrated fundraising exclusively for nonprofits.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8	SIDEM	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	n/a	47 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9	The Calpro Group, INC	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	n/a	31 contacts →
	Exact match “TCG offers over 25 years of experience in all aspects of the hospitality, meeting planning and tradeshow industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10	High Impact Partners HIP	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	11-50	21 contacts →
	Exact match “Management Consulting Firm * info@hipimpact.com.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11	Quatt Associates	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	11-50	19 contacts →
	Exact match “Quatt Associates, Inc.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12	Stratus Firm	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	11-50	18 contacts →
	Exact match “At Stratus®, we create high-impact experiences that transcend the ordinary.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13	Spark Point Fundraising	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	11-50	14 contacts →
	Exact match “Spark Point is the resource that nonprofits are hungry for – a thought partner to guide them to an easily implemented, sustainable fundraising strategy and an experienced grant…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14	Rendezvous	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	14 contacts →
	Exact match “We love what we do.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15	Bell Creek Consulting	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	11-50	12 contacts →
	Exact match “Bell Creek Consulting is a growing mission-‐driven firm launched by alumni of top‐tier strategy consultancies.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16	Abundance Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	11 contacts →
	Exact match “For more than ten years, Abundance Strategies (formerly KG Consulting) has been empowering nonprofits to embrace a culture of abundance and helping them to raise millions of…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17	Thread Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	11 contacts →
	Exact match “Thread Strategies is a woman-led fundraising consulting firm that specializes in supporting small nonprofits.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18	Preeti Exclusive Events	Exact match	Washington, United StatesHQ recorded Sep 29, 2026	1-10	11 contacts →
	Exact match “A mainstay in the wedding industry since its inception in 2004, Preeti Exclusive Event Planning quite simply makes magic happen.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19	Fundraise INC	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	8 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20	RGI Events	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	7 contacts →
	Exact match “RGI is an award-winning, special events production firm + design atelier, connecting organizations to audiences, through the power of shared experiences.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21	REX & Regina Events	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	7 contacts →
	Exact match “To follow along with our adventures and learn more about Rex & Regina Events, follow our founder, Teresa Antonucci Lee.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22	Eliasson Group	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	6 contacts →
	Exact match “We bring decades of fundraising, organizational development and marketing and communications background to non-profit and for-profit executive leadership, CEOs, philanthropists…” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23	Four Corners Strategies	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	5 contacts →
	Exact match “At Four Corners Strategies, we turn ideas into extraordinary experiences through strategic vision, creativity, and flawless execution.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24	A. Dominick Events	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	5 contacts →
	Exact match “Since our inception in 2005, we have become a force in the DC event industry.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25	L Street Partners	Exact match	Washington, DC, United StatesHQ recorded Sep 29, 2026	1-10	5 contacts →
	Exact match “At LSP, we approach problems and opportunities with know-how, collaboration, and an entrepreneurial spirit.” Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “nonprofit event management consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 158 nonprofit event management consultants based in Washington, United States

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Nonprofit event management consultants based in Washington, United States at a glance

As of Sep 29, 2026

42.7%Verified-email coverage

11.2Average contacts per company

1-10Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

132

11-50

51-200

201-500

10001+

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 158 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Washington, United States whose business descriptions match “nonprofit event management consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 756 professional contacts with verified work emails across the full matched dataset. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Nonprofit event management consultants by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “nonprofit event management consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many nonprofit event management consultants are there based in Washington, United States?

RevenueBase identified 158 company matches for nonprofit event management consultants associated with Washington, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Nonprofit Hr, Powered By Onedigital tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most nonprofit event management consultants?

New York leads the United States with 311 company records, followed by Chicago (166) and Atlanta (160). Washington has 158.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 756 professional contacts with verified work emails tracked across these 158 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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 SmartSearch, 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.