Accelerator · Washington, District of Columbia, United States
Halcyon is a Washington, DC organisation running themed accelerators for impact-driven ventures in climate, health and EquityTech. Programmes mix virtual sessions with two one-week in-person residencies and pay stipends.
Rolling applications
Verified 18 October 2026 · From the programme's own pages
Each programme accepts up to 10 ventures and runs a virtual kickoff day, a one-week in-person residency, four monthly virtual meetings and a closing one-week residency. 2026 programmes covered themes such as global EquityTech, climate in Latin America and the Caribbean, and US health. Stipend amounts and any equity terms are not published.
Applications are accepted at any time.
Usual timing: Founders can submit an eligibility form year-round; invited applicants complete a second-round application during each programme's open call. The Africa Innovation in Agriculture and Food Security Accelerator (2027) is listed as open, without dates.
rePurpose Global, Korion Health, Thimble, Kubik, Quark
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