Mack Sennett, Canadian-American actor, director, producer, and screenwriter (b. 1880)
Mack Sennett (born Michael Sinnott; January 17, 1880 – November 5, 1960) was a Canadian-American film actor, director, and producer, and studio head, known as the 'King of Comedy'.

Born in Danville, Quebec, in 1880, he started in films in the Biograph Company of New York City, and later opened Keystone Studios in Edendale, California in 1912. Keystone possessed the first fully enclosed film stage, and Sennett became famous as the originator of slapstick routines such as pie-throwing and car-chases, as seen in the Keystone Cops films. He also produced short features that displayed his Bathing Beauties, many of whom went on to develop successful acting careers.

Sennett's work in sound movies was less successful, and he was bankrupted in 1933. In 1938 he was presented with an honorary Academy Award for his contribution to film comedy.