Eastin is a surname. Notable people with the surname include:
Delaine Eastin (1947–2024), American politician and educator Ella Eastin (born 1997), American swimmer Jeff Eastin (born 1967), American television producer and screenwriter Matt Eastin (born 1979), American music video, documentary, and commercial director and editor Shannon Eastin (born 1970), American NFL official Steve Eastin (born 1948), American character actor Zachariah Eastin (1777–1852), American officer in the War of 1812