Blondie is the nickname of:
Blondie Chaplin (born 1951), South African singer, songwriter and musician, briefly part of the Beach Boys
Gwendolyn Chisolm (1959–2026), American rapper and former member of female hip hop The Sequence; sometimes incorrectly credited as Blondie
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
Blondie Robinson, American stage performer, vaudeville and minstrel.
Arnold Walker (RAF officer) (1917–2008), British Second World War fighter pilot
Debbie Harry (born 1945), lead singer of the band Blondie, who is sometimes referred to by that name
Clint Eastwood's character in the film The Good, the Bad and the Ugly