There's a new way to build your startup.

Join a fellowship that combines a world-class startup-building curriculum, hands-on mentorship, and a powerful network. We've created the place to level up as an entrepreneur while you get your hands dirty building alongside the world's top founders.

Join 1k+ other founders and sign up for our mailing list to stay up to date on all things Day One. 

"If you're setting off to build something new, you need other founders in your corner, you need a place for support, you need someone to guide you from day one of your entrepreneurial journey." 

- Andrew Hutton, Founder, Day One


More than a course. More than a community.

Day One is a global fellowship for founders in the early stages of building something new.

Be part of a fellowship with high-potential founders.

Join a cohort of entrepreneurs from all over the world who are committed to sharing, collaborating and building alongside one another. Build relationships, multiply your network and find support for when the going gets tough.

World class guidance while you get down to building.

Follow a playbook honed at world-class venture studios, completing projects that will push your business forward. Learn the ins and outs of building from experienced founders and operators. And receive guidance from Day One Mentors who will be alongside you every step of the way.

Resources and support to keep your momentum going.

Day One starts with an 8-week program, but continues on through our ongoing community. Connect with hundreds of entrepreneurs across all Day One cohorts, and tap into valuable resources and connections as you build and grow.

Activating Entrepreneurs

Day One is designed for early stage entrepreneurs (and intrapreneurs) who want to level up how they start, build and grow a business.

You are a future founder and want to learn the ins and outs of entrepreneurship, explore ideas and add to your entrepreneurial skill set.

You are in the early days of building and want the support, guidance and structure to avoid getting stuck at the starting line.

You are in the messy middle of building your business and want to tap into the accountability, collaboration and momentum

Spotlight of some Day One fellows

Just some of the companies they come from

"Day One is high touch, unlike any other program out there. We would share what we're working on, share the challenges that we're facing, and get feedback and ideas from the group and mentors and solve the problems together. That's been incredible as we build this new venture. I would definitely recommend Day One to any person who's thinking about becoming an entrepreneur."


- Berta Argente, Business Designer at Polymath Ventures, Cohort 1 Alumni

"I highly recommend Day One and their superstar team. If you are an entrepreneur looking for a strong and supportive community to help you go from zero to 1, then this is the place for you!​"


- Olivier Moingeon, Managing Director, Traub, Formerly CEO, Bastide, Cohort 1 Alumni

"I love having such a great community to lean on. Although it's giving me the classic existential crisis - did I really need to go to MIT? Day One is more than enough!"

- MIT Sloan MBA Student, Cohort 1 Alumni

"I'm amazed at the depth and breadth of experience represented across the cohort. Day One did an amazing job at gathering a diverse, inspiring group of entrepreneurs and mentors."

- James Clements, Founder, Old Friends, Cohort 1 Alumni

"I came to Day One with the goal to really learn how to do customer discovery the right way, and to be able to know if I was working on something that people wanted - because I think you can spin your wheels trying to solve a problem that nobody really cares about. And with Day One, I was able to learn from both my peers and experts and come away knowing "this is what we're going to do." 


- Julia Hutchins, Founder, Bell Bird, Formerly co-founder, Apostrophe Health, Cohort 1 Alumni

Mentors & Speakers 

Day One Mentors and speakers have $b exits under their belts, are serial entrepreneurs, and manage $100m+ funds. Here are just a few of the founders, operators and investors who guide, support, advise and teach within Day One.

Charlie O'Donnell

General Partner - Brooklyn Bridge Ventures

Katie Shea

Partner - Kairos & K50 Ventures

Ryan Begelman

Founder & CEO - Summit

CEO - Bisnow

Karen Cahn

Founder & CEO - iFundWomen

Yonatan Raz-Fridmen

Founder & CEO - Supersocial

Founder & CEO - Kano Computing

Elizabeth Ferrao

Founder - Product Mindset

Technical PM - American Express

Tom Higley

Founder & CEO - XGenesis

Ashish Gupta

Fmr Hedge Fund Manager backed by Millennium Management 

Jesse Morris

General Partner - Human Ventures

Jenny Fielding

Managing Director, Techstars NYC

Founder and GP, The Fund

Julie Markham

COO - Unreasonable Group

Founder & CEO - PingWHEN (Techstars 15)

Joe White

Partner - Entrepreneur First

Alex Maleki

Managing Director - Idealab

Betsy Fore

Founder, Tiny Organics

Judith Erwin

CEO - Grasshopper Bank

Beatriz del Rio

Investor - Vine Ventures

We’re removing the barriers to entrepreneurship.

Too many founders either get stuck at the starting line or stumble out the gates. They're inundated with content about how to build, but don't ever receive real guidance. They're connected to interesting people, but never the structure or the accountability to make the most of their moment.

Day One is here to fill that gap, with a fellowship that's built around, well, building, and providing early-stage founders a playbook, the expert guidance, and yes the community, to build with confidence from day one.

Apply to join Day One today

You get

8-Week​ Program

Flagship startup-building​ curriculum

Collaborate daily with tight-knit cohort of world-class founders 

Active guidance from mentors and investors


Weekly expert-led workshops and talks

Participate in investor + mentor showcase

+ lifetime community membership

Lifetime Community Membership

Connect to fellows across all cohorts through fellow-only Slack + directory


Monthly speakers and workshops

Connections across Day One network

Access to library of recorded sessions

Templates, tools and resource library

Members only perks

Join an upcoming cohort

Cohort 2

Program Start

Late January

Applications Due

Rolling Admissions

Tuition: $999

Admission decisions are made on a rolling basis with limited seats available, so apply early. Applications are always free, and limited scholarships are available.

100% satisfaction guarantee, no questions asked refunds if you aren't thrilled with your Day One experience

Day One is Better Together

Co-Founder Discount

After the first paying fellow, each co-founder from a single startup team will receive a 50% discount. Applicable for up to 3 co-founders. Apply individually and note in the application who your co-founders are.

Join with a friend


Join Day One with a friend and each of you will receive $150 off the cost of tuition. Apply individually and note in the application who you are applying with. 

What People Are Saying

Still not sure if you're ready? Talk to a Day One team member or a current fellow one on one to help you decide.

Day One


Contact Us

661 Lincoln Place

Brooklyn, NY, 11216

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