Rossiter is a surname. Notable people with the surname include:
- Brian Rossiter, whose death led to an investigation with the Irish state paying damages to his family
- Clinton Rossiter, historian, political scientist and author
- Edward Rossiter, a soldier in the Parliamentarian army
- H. Rossiter, a football player
- James Rossiter, a race car driver
- James Patrick Rossiter, lawyer and former mayor of Erie, Pennsylvania
- Jordan Rossiter (born 1997), an English professional footballer
- Keith Rossiter, an Irish hurling player
- Kyle Rossiter, a Canadian ice hockey player
- Leonard Rossiter, a British actor
- Margaret W. Rossiter, American historian of science
- Richard Alfred Rossiter, astronomer, known for the Rossiter–McLaughlin effect
- Ryan Rossiter, an American basketball player
- Stuart Rossiter, philatelist
- Thomas Prichard Rossiter, an American portrait and historical painter