Halcyon Accelerator 2026/2027 for Impact-Driven Startups

The Halcyon Accelerator is a year-round accelerator program for early-stage, impact-driven ventures. It supports founders building scalable, for-profit businesses that address social and environmental challenges and aims to help them become commercially viable. The program combines virtual activities with in-person residencies and uses a rolling eligibility process with multiple fellowships in the portfolio.

Structured accelerator environment, global founder community, mentorship, and engagement opportunities with impact-driven entrepreneurs; hybrid format with online and in-person residencies.

Founders with an MVP, operating impact-driven, for-profit, scalable ventures; applicants may be international; founders must be working full-time on their venture with users or paying customers.

Submit the year-round eligibility form; if eligible, invited to submit a more detailed second-round application; final cohort determined by a Selections Committee.