Dan O'Keefe (writer)

Dan O'Keefe (born 1968) is a writer and producer, best known for his writing for Seinfeld, The Drew Carey Show, The League and Silicon Valley.

O'Keefe is responsible for popularizing the holiday Festivus on the 1997 Seinfeld episode "The Strike". Festivus had been invented by O'Keefe's father, editor and author Daniel O'Keefe, in the 1960s.

In 2005, Dan O'Keefe published an official book about the holiday and its history, titled The Real Festivus.

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