Scot Armstrong is an American screenwriter, director, and producer. He is credited with writing or co-writing numerous comedy films, including Old School, The Hangover: Part II, Semi-Pro, Road Trip, and many others. He is also the writer and director of the 2015 film, Search Party. The film was released in the US in May 2016. Also in 2016, his TV series, Dice, premiered on Showtime.

Old School is a 2003 American comedy film directed and co-written by Todd Phillips. The film stars Luke Wilson, Vince Vaughn, and Will Ferrell as depressed men in their thirties who seek to relive their college days by starting a fraternity, and the tribulations they encounter in doing so. The film was released on February 21, 2003, received mixed reviews from critics, and grossed $87 million worldwide.