Blondie is the nickname of:
Blondie Chaplin (born 1951), South African singer, songwriter and musician, briefly part of the Beach Boys
Dave Colclough (born 1964), Welsh poker player nicknamed "El Blondie"
Blondie Forbes, American poker player credited with inventing Texas Hold'em
Herbert Hasler (1914-1987), British Royal Marine lieutenant colonel during the Second World War
Arnold Walker (RAF officer) (1917-2008), British Second World War fighter pilot