Blackshear is a surname first found in Devon, England. Notable people with the surname include:
Colin Blackshear (born 1979), American filmmaker and multi-media artist David Blackshear (1764–1837), American general Jeff Blackshear (born 1969), former American football guard Kathleen Blackshear (1897–1988), American artist Kerry Blackshear Jr. (born 1997), American basketball player in the Israeli Basketball Premier League Raheem Blackshear (born 1999), American football player Rodney Blackshear (born 1969), former American arena football wide receiver Ronald Blackshear (born 1978), former American professional basketball player Thomas Blackshear (born 1955), African-American artist Wayne Blackshear (born 1992), American professional basketball player