About

21ST is a founder community for young builders — 700+ strong, across 66 universities, 40 cities, and 3 continents. We run events, make intros, and back the most promising founders through 21st Ventures, our $4M fund.

We are community of 400-young founders. 66 universities, 40 cities, 3 continents. Backed by 21st Ventures, our $4M fund.

Young builders from everywhere.

700+ Members

66 Universities

4M Fund

Across 40+ schools

What can you expect?

Rooms full of ambitious people, from NYC to Seoul to Melbourne

Warm intros to some of the top founders and investors around the world. Real partnership perks from companies like Anthropic, Ramp, Notion, and more.

A shot at a check from 2lst Ventures. We write checks at the pre-seed and seed stages ranging from $50K- $200K

When you need advice, a cofounder, an operator intro, or just someone who understands what it feels like to build before you’re supposed to be ready, 21ST is the place to look. Events are coming; the directory, intros, and people are already here.

What we do

Founder Events
Campus meetups
Curated intros
Member directory
Consumer founder tables
Founder Dinners
Peer feedback
Late-night build sessions
Community notes

Network

Builder fields

Fintech

Consumer

Communities

Climate

Creator tools

Education

Schools

Stanford

Harvard

Yale

Cambridge

Berkeley

Columbia

NYU

Parsons

UCLA

USC

40+ total

Built for

First-time founders

Student operators

Technical builders

Consumer obsessives

AI experimenters

Fintech hackers

Community starters

Solo founders

Cofounder seekers

People still figuring it out

Late-night builders

Early believers

Campus connectors

Future operators

Anyone making something

Members

400+ members

100+ founders

66 universities

Across 40+ schools

Warm intros

When you need one

Events

Everywhere

Coming soon