Chet Faliszek (/ˈfɑːlɪsɛk/; born 1965) is an American video game writer who has worked for companies like Valve and Bossa Studios, having been involved in the story writing for series such as Half-Life, Portal, and Left 4 Dead.

Faliszek first gained recognition as the co-creator of the satirical Old Man Murray website along with Erik Wolpaw around 1997, and which ran until 2002.

Along with Wolpaw and Marc Laidlaw, Faliszek helped to create the storylines for the Half-Life and Portal series, along with having personally written the story for Left 4 Dead.

[6][7] In May 2018, Faliszek announced he had also joined the board of advisers for Vertigo Games, and will help support a virtual reality title they are currently developing.

By March 2019, he founded a new studio, Stray Bombay Company, along with Riot Games' Kimberly Voll, in essence to continue the development of the cooperative title.