Bast is a surname. Notable people with the surname include:

• Dieter Bast (born 1951), German footballer
• Jason Bast (born 1989), Canadian ice hockey player
• Joseph Bast (born 1958), CEO of the Heartland Institute
• Ørnulf Bast (1907–1974), Norwegian sculptor and painter
• Robert Bast (born 1965), New Zealand writer
• Ryan Bast (born 1975), Canadian ice hockey player
• William Bast (1931–2015), American screenwriter and writer

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