Dan O'Keefe (born 1967 or 1968)[1] is an American television writer and producer, who has worked on such shows as Seinfeld, The Drew Carey Show, The League, Silicon Valley, and Veep.
O'Keefe was born to writers Deborah and Daniel O'Keefe, who was best known as the creator of the holiday Festivus.
[2] O'Keefe graduated from Harvard College in 1990.
[2] As a television writer, O'Keefe was responsible for popularizing the holiday Festivus on the 1997 Seinfeld episode "The Strike".
In 2005, Dan O'Keefe published a book about the holiday and its history, titled The Real Festivus.