Blackshaw is an English surname. Notable people with the surname include:
Alan Blackshaw (1933–2011), English mountaineer, skier and civil servant Andrew Blackshaw (born 1990), Australian softball player Basil Blackshaw (1932–2016), Northern Ireland artist Bill Blackshaw (1920–1994), English footballer Christian Blackshaw (born 1949), British classical pianist James Blackshaw (born 1981), English musician Niamh Blackshaw (born 1999), English actress