OS Fund (OSF) is a venture capital firm focused on deep tech and breakthrough science companies. It was originally based in Los Angeles and is now headquartered in Jackson, Wyoming. The firm focuses on Seed and Series A investments in companies using biology, genomics, and advanced computation to solve global challenges.

Its portfolio includes Kernel, a consumer neurotechnology company developing high-density fNIRS brain imaging. OS Fund's broader strategy spans synthetic biology, personalized medicine, quantum computing, and advanced materials. Its thesis centers on 'quantum leaps' in human capability rather than incremental innovation.

OS Fund is primarily US-focused but maintains a global outlook. For neurotech and biotech founders, it is most relevant for early-stage companies seeking a partner comfortable with high technical risk and long development timelines.