Southern California's
Tech
Startup Directory
Showcasing Southern California's innovation, one startup at a time. Every funded and bootstrapped company, from seed round to first dollar of revenue, tracked as it happens.
Includes SEC Form D filings from the last 3 years, plus all-time totals for companies sourced from YC and news coverage.
Artificial Intelligence
The region's largest single cluster by company count — AI and machine learning threaded through nearly every other industry here, from defense to biotech to entertainment.
Aerospace & Defense
Home to SpaceX, Northrop Grumman, and a new wave of hypersonics and space-infrastructure startups.
Entertainment & Gaming Tech
Hollywood's production infrastructure, live events, and a growing games and creator-tools scene.
Semiconductor Hardware
Qualcomm and Broadcom anchor a chip-design cluster spanning the region.
Medical Technology
A deep biotech research base and a growing bench of medical device and diagnostics startups.
B2B
Business software and services sold to other companies. The largest single category of startup across Southern California, spanning sales tools, vertical operating systems, and everything in between.
Industrials
Manufacturing, hardware, and physical-world operations. Overlaps heavily with the region's decades-old aerospace and defense manufacturing base, now extending into robotics and automated production.
Consumer
Products and apps built directly for individual consumers, drawing on Southern California's media and entertainment base.
Healthcare
Health tech, medical devices, and healthcare services, backed by a decades-old biotech research base and a deep bench of clinical and diagnostics startups.
Fintech
Financial technology: payments, banking, investing, and financial infrastructure.
Education
Education technology and learning platforms built across Southern California.
Real Estate & Construction
Property technology, construction tech, and real estate services.
Series D$1.37BHadrian is building highly automated factories to manufacture critical components and systems for defense and aerospace.
Series G$1.19BShield AI is a defense-tech company building the world's best AI pilots and next-generation aircraft.
Series D$1.04BMetropolis transforms the parking experience with a computer vision platform that enables checkout-free payment.
Series C$1BCastelion is a Torrance-based defense startup that mass-produces hypersonic missiles, aiming to shorten development cycles and reduce costs compared to traditional defense programs.
Series C$862.2MSKIMS is a solutions oriented brand creating the next generation of underwear, loungewear and shapewear.
Series D$833.1MWe provide efficient in-space mobility that moves payloads from low Earth orbit to any destination. Our vehicles deliver rapid, reliable access, reducing costs and timelines to make space operations feasible for commercial, government, and scientific missions.
$656.4MDeveloping the next generation of oncology therapies for patients.
Hollywood producer Ryan Kavanaugh (founder of Relativity Media) and Bobby Sarnevesht took a controlling investment in Triller in 2019.