Company lists · Data refreshed September 2026

Top 25 Alumni networking organizations worldwide

RevenueBase identified 4,453 alumni networking organizations worldwide as of September 2026 and tracks 53,775 professional contacts across them, including 8,737 with verified work emails. The United States is the largest market and New York the largest hub.

This list covers alumni networking 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 19, 2026. Country and city lists for alumni networking 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.

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
4,453Companies
53,775Contacts tracked
8,737Verified emails
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The 25 largest alumni networking organizations worldwide

Ranked by team size
Top 25 of 4,453 alumni networking organizations worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to alumni networking organizations: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceÁlvaro Obregón, MexicoHQ checked Sep 19, 20261,001-5,0001,740 contacts →

Indirect evidence

“Lobo una vez, Lobo toda la vida.”

Source: RevenueBase Database · checked Sep 19, 2026
2Partial evidenceMadison, WI, United StatesHQ checked Sep 19, 2026201-500515 contacts →

Partial evidence

“The Wisconsin Foundation and Alumni Association is your connection to UW-Madison.”

Source: RevenueBase Database · checked Sep 19, 2026
3Indirect evidenceSan Andrés Cholula, MexicoHQ checked Sep 19, 2026501-1,000346 contacts →

Indirect evidence

“La IBERO Puebla cuenta con egresados y profesionales que son líderes en el mundo laboral y ponen sus habilidades al servicio de los demás.”

Source: RevenueBase Database · checked Sep 19, 2026
4Indirect evidenceJohannesburg, South AfricaHQ checked Sep 19, 2026201-500337 contacts →

Indirect evidence

“Did you complete your studies at Crawford International?”

Source: RevenueBase Database · checked Sep 19, 2026
5Indirect evidenceCiudad De Buenos Aires, ArgentinaHQ checked Sep 19, 202651-200316 contacts →

Indirect evidence

“Queridos Exalumnos, desde esta herramienta esperamos poder mejorar un poco más la comunicación y convocatoria a las actividades de la Comisión de Exalumnos.”

Source: RevenueBase Database · checked Sep 19, 2026
6Indirect evidenceDelhi, IndiaHQ checked Sep 19, 2026n/a268 contacts →

Indirect evidence

“Krishi Rasayan Exports Pvt.”

Source: RevenueBase Database · checked Sep 19, 2026
7Partial evidenceHyderabad, IndiaHQ checked Sep 19, 202651-200227 contacts →

Partial evidence

“Univariety is a leading platform that enhances connections between institutes, students, and alumni.”

Source: RevenueBase Database · checked Sep 19, 2026
8Indirect evidenceBogotá, ColombiaHQ checked Sep 19, 202651-200180 contacts →

Indirect evidence

“Somos la Asociación de Egresados de la Universidad de los Andes, fundada en 1955.”

Source: RevenueBase Database · checked Sep 19, 2026
9Partial evidenceSeattle, WA, United StatesHQ checked Sep 19, 202651-200161 contacts →

Partial evidence

“We help institutions stay connected to students and alumni they serve by improving communication, simplifying support, and strengthening relationships to drive better outcomes at…”

Source: RevenueBase Database · checked Sep 19, 2026
10Partial evidenceSão Paulo, BrazilHQ checked Sep 19, 2026n/a157 contacts →

Partial evidence

“GVAngels is a non-profit organization, created in 2017 by EAESP-FGV alumni, with the goal of generating opportunities among alumni who want to invest in Startups with growth…”

Source: RevenueBase Database · checked Sep 19, 2026
11Partial evidenceHyderabad, IndiaHQ checked Sep 19, 202651-200140 contacts →

Partial evidence

“Coherendz is a product based company in Hyderabad helping institutions build thriving alumni communities through the product vaave, a platform to setup an exclusive alumni…”

Source: RevenueBase Database · checked Sep 19, 2026
12Partial evidenceAtlanta, GA, United StatesHQ checked Sep 19, 202611-50120 contacts →

Partial evidence

“Serve and promote the Institute and its alumni through programming and engagement that fosters lifelong relationships, philanthropic support and goodwill.”

Source: RevenueBase Database · checked Sep 19, 2026
13Indirect evidenceOakland, CA, United StatesHQ checked Sep 19, 2026n/a103 contacts →

Indirect evidence

“For over 35 years, The Toigo Foundation has advanced leadership, excellence and innovation within finance and its intersections.”

Source: RevenueBase Database · checked Sep 19, 2026
14Indirect evidenceLas Palmas De Gran Canaria, SpainHQ checked Sep 19, 202611-50102 contacts →

Indirect evidence

“En EBIS, somos mucho más que una escuela de negocios.”

Source: RevenueBase Database · checked Sep 19, 2026
15Partial evidenceBellevue, WA, United StatesHQ checked Sep 19, 202651-200100 contacts →

Partial evidence

“For over 30 years, Classmates® has been the leading online social media platform for high school alumni connections.”

Source: RevenueBase Database · checked Sep 19, 2026
16Partial evidenceParis, FranceHQ checked Sep 19, 202611-5093 contacts →

Partial evidence

“Founded in 1883 and with a community of @HEC Paris graduates worldwide, HEC Alumni has been named the most influential alumni association in the world by The Economist.”

Source: RevenueBase Database · checked Sep 19, 2026
17Partial evidenceLondon, United StatesHQ checked Sep 19, 202651-20090 contacts →

Partial evidence

“EnterpriseAlumni is the leading provider of alumni management software, empowering the alumni networks of top global companies, government and military organizations.”

Source: RevenueBase Database · checked Sep 19, 2026
18Partial evidenceMumbai, IndiaHQ checked Sep 19, 202651-20090 contacts →

Partial evidence

“Student Alumni Relations Cell (SARC) is a voluntary organization run by the students of IIT Bombay committed towards the enhancement of relations between students and alumni of…”

Source: RevenueBase Database · checked Sep 19, 2026
19Indirect evidenceChester, United KingdomHQ checked Sep 19, 2026201-50089 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 19, 2026
20Partial evidenceParis, FranceHQ checked Sep 19, 2026n/a88 contacts →

Partial evidence

“YHC is the first private community dedicated to the best students and young alumni evolving in the Hospitality Industry across Europe.”

Source: RevenueBase Database · checked Sep 19, 2026
21Indirect evidenceNew York, NY, United StatesHQ checked Sep 19, 2026n/a85 contacts →

Indirect evidence

“The Post is a private membership network for accomplished athletes turned business leaders.”

Source: RevenueBase Database · checked Sep 19, 2026
22Partial evidenceLos Angeles, CA, United StatesHQ checked Sep 19, 2026201-50081 contacts →

Partial evidence

Alumni Page The mission of Le Lycée Français de Los Angeles is to promote interaction between current and former students.”

Source: RevenueBase Database · checked Sep 19, 2026
23Indirect evidenceKuala Lumpur, MalaysiaHQ checked Sep 19, 202651-20081 contacts →

Indirect evidence

“A self-sustaining non-profit organisation committed to combating global issues, one volunteering project at a time.”

Source: RevenueBase Database · checked Sep 19, 2026
24Partial evidenceLondon, United KingdomHQ checked Sep 19, 202611-5081 contacts →

Partial evidence

“Future First’s believes that alumni can be inspirational role models and help schools do even more for their students.”

Source: RevenueBase Database · checked Sep 19, 2026
25Partial evidenceCambridge, MA, United StatesHQ checked Sep 19, 202651-20077 contacts →

Partial evidence

“Harvard Alumni Entrepreneurs is the only official alumni organization recognized by the Harvard Alumni Association for promotion of entrepreneurship in Harvard alumni across the…”

Source: RevenueBase Database · checked Sep 19, 2026

Showing 25 of 4,453 alumni networking organizations worldwide

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Alumni networking organizations worldwide at a glance

As of Sep 19, 2026
16.2%Verified-email coverage
12.1Average contacts per company
11-50Median size (employees)
1.9%Largest-city concentration · New York
Sep 19, 2026Page data refreshed

Companies by employee count

1-10
1,838
11-50
1,146
51-200
532
201-500
259
501-1,000
174
1,001-5,000
232
5,001-10,000
94
10001+
167

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 alumni networking 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 alumni networking organizations are linked below.
What qualifies
Companies worldwide whose own description of what they do matches “alumni networking 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 alumni networking 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 alumni networking 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, 8,737 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.

Alumni networking organizations by location

9 lists · largest first

Every Alumni networking organizations list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 alumni networking 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 alumni networking organizations are there worldwide?

RevenueBase identified 4,453 alumni networking 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?

Universidad Iberoamericana, Ciudad DE México, headquartered in Alvaro Obregon, tops this list with the largest team on record.

Which country has the most alumni networking organizations?

The United States leads with 1,176 companies, followed by India (391) and France (261). Every alumni networking organizations list by country and city is linked on this page.

Which city has the most alumni networking organizations?

New York leads with 83 headquartered companies, followed by London (67) and Paris (64).

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 8,737 verified decision-maker contacts tracked across these 4,453 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.

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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.