sennett

Sennett is a surname of English-language origin. In genealogical usage it is often treated as a variant of Sinnett or Sinnott, with spelling variants such as Sinnett and Sinnott appearing in different regions and periods. The name is found among families in the United States, Canada, and the United Kingdom, reflecting historical migration and anglicization patterns.

Notable bearers include Mack Sennett (born Michael Sinnott, 1880–1960), a Canadian-born American filmmaker and producer who founded Keystone Studios. Sennett was a pivotal figure in the development of early cinema, known for popularizing slapstick comedy and the Keystone Cops, and for fostering the careers of performers who would become major stars in silent film.

As a surname, Sennett is most closely associated with Mack Sennett in popular culture and historical discussions of early film. Variants such as Sinnett and Sinnott illustrate how spelling changed over time and across regions.