William Klein
# William Klein

Bill, Will, Willy, Willie or William Klein may refer to:

* William Klein (photographer) (1926–2022), American-French photojournalist and filmmaker
* Will Klein (baseball) (born 1999), pitcher in the Kansas City Royals organization
* Willie Klein (1901–1957), American champion golfer
* Willy Klein (1912–2004), Luxembourgian Olympic gymnast in 1936
* Bill Klein (businessman) (born 1948), American high-stakes poker champion
* Bill Klein, American football end in 1950 NFL Draft
* Bill Klein, American businessman on 2009 TV reality series The Little Couple
