Justin Kan (born July 16, 1983) is an American internet entrepreneur and investor. He is the co-founder of live video platforms Justin.tv and Twitch, as well as the mobile social video application Socialcam. He was also the co-founder and former CEO of law-tech company Atrium before it was shut down in March 2020. In 2021, he launched NFT marketplace Fractal, which was renamed to Stash in 2024.
He was a partner at Silicon Valley incubator Y Combinator. He gained widespread attention for his "lifecasting" experiment on Justin.tv, where he attempted to broadcast his entire life. Kan also started a Reddit-style electronic music discovery platform, The Drop.