Company lists · Data refreshed September 2026
Top 25 Greek life organizations worldwide
RevenueBase identified 434 greek life organizations worldwide as of September 2026 and tracks 30,852 professional contacts across them, including 586 with verified work emails. The United States is the largest market and Indianapolis the largest hub.
This list covers greek life organizations worldwide, 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 20, 2026. Country and city lists for greek life organizations follow the table.
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.
The 25 largest greek life organizations worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,466 contacts → | ||||
Indirect evidence “We’ve been doing good for women and communities since 1873.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 2 | 2,976 contacts → | ||||
Indirect evidence “Alpha Chi Omega is an organization for women who have strength and courage in their convictions.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 3 | 2,578 contacts → | ||||
Indirect evidence “Delta Sigma Pi is the nation's largest and first co-ed, professional business fraternity that encourages personal and professional development of men and women pursuing careers in…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 4 | 2,274 contacts → | ||||
Indirect evidence “Kappa Alpha Theta Fraternity is a company based out of 5720 Montezuma Rd, San Diego, California, United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 5 | 1,428 contacts → | ||||
Indirect evidence “In 1893, ten young women at Lombard College in Galesburg, Illinois, shared a vision and a dream of a national organization dedicated to the personal growth of women.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 6 | 1,161 contacts → | ||||
Indirect evidence “Pi Kappa Phi is a collegiate men's organization focused on providing a solid experience in key areas of male development including social interaction, scholarship, leadership and…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 7 | 1,101 contacts → | ||||
Indirect evidence “SigEp is redefining fraternity on college campuses across the country.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 8 | 1,038 contacts → | ||||
Indirect evidence “Sigma Delta Tau is a national sorority and member of the National Panhellenic Conference.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 9 | 889 contacts → | ||||
Indirect evidence “Alpha Phi Omega is the single most represented co-educational intercollegiate service organization in the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 10 | 874 contacts → | ||||
Indirect evidence “Lambda Chi Alpha Fraternity is one of the largest men’s general fraternities in North America with more than initiated members and has held chapters at more than 300 universities.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 11 | 774 contacts → | ||||
Indirect evidence “Alpha Omicron Pi was founded in 1897 at Barnard College of Columbia University in New York City.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 12 | 505 contacts → | ||||
Indirect evidence “Delta Sigma Phi is a men's fraternity with active chapters in 33 states of the USA.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 13 | 259 contacts → | ||||
Indirect evidence “Phi Sigma Kappa is a lifelong brotherhood dedicated to the betterment of the individual, the university community, and our world, by giving its members opportunities to develop…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 14 | 223 contacts → | ||||
Indirect evidence “Chi Psi Fraternity is a strong presence at 34 of America's finest and most respected institutions of higher learning.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 15 | 189 contacts → | ||||
Indirect evidence “Founded in 1912, Theta Phi Alpha is a women’s organization to provide close comradeship; to advance educational, social, and philanthropic interests and leadership training; to…” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 16 | 142 contacts → | ||||
Indirect evidence “Since 1847, Theta Delta Chi has believed that it is the duty of every member to improve himself intellectually, morally, and socially through friendship.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 17 | 131 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 18 | 75 contacts → | ||||
Indirect evidence “Kappa Delta Rho is an American college social fraternity with chapters throughout the United States.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 19 | 73 contacts → | ||||
Indirect evidence “Alpha Phi Delta Fraternity was founded in 1914 at Syracuse University in Syracuse, New York, by a group of men with Italian roots.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 20 | 51 contacts → | ||||
Indirect evidence “Fraternal Organization” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 21 | 27 contacts → | ||||
Indirect evidence “Kappa Beta Gamma is a non-Panhellenic Sorority.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 22 | 23 contacts → | ||||
Indirect evidence “The Interfraternity Council (IFC) serves as the governing body of the 21 IFC fraternities at Clemson University.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 23 | 18 contacts → | ||||
Indirect evidence “The mission of Latino America Unida, Lambda Alpha Upsilon Fraternity, Inc.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 24 | 11 contacts → | ||||
Indirect evidence “RISE challenges fraternity and sorority members to step up, take action and use their values to change the world.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
| 25 | 6 contacts → | ||||
Indirect evidence “As the largest collegiate service organization, Circle K International (CKI) boasts a membership of more than collegians on nearly 550 campuses worldwide.” Source: RevenueBase Database · checked Sep 20, 2026Thanks. The Data Team will review it. | |||||
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: greek life organizations. 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 greek life organizations.
- Partial evidence
- Its own public description names part of greek life organizations, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name greek life organizations. 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 434 greek life organizations worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 586 reachable decision-makers.
Free signup · no credit card
Greek life organizations worldwide at a glance
As of Sep 20, 2026Companies by employee count
Email recency is reported on each country list linked below.
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 greek life organizations, 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.
- Coverage
- Every country. Country and city lists for greek life organizations are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “greek life organizations”. 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 greek life organizations), 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 greek life organizations, and records with no verified work email.
- 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, 586 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 20, 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.
Greek life organizations by location
1 lists · largest firstEvery Greek life organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
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 greek life organizations, 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 greek life organizations are there worldwide?
RevenueBase identified 434 greek life organizations worldwide 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?
Delta Gamma, headquartered in Columbus, tops this list with the largest team on record.
Which country has the most greek life organizations?
The United States leads with 352 companies. Every greek life organizations list by country and city is linked on this page.
Which city has the most greek life organizations?
Indianapolis leads with 9 headquartered companies, followed by San Diego (9) and Atlanta (8).
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 586 verified decision-maker contacts tracked across these 434 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 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 434 greek life organizations worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.