Barnacle Bill may refer to: "Barnacle Bill (song)", the theme tune of the BBC children's TV programme Blue Peter William Bernard (sailor), subject of the song Barnacle Bill (Martian rock), a 40-cm rock on Mars in Ares Vallis Barnacle Bill (1930 film), a Fleischer Studios animated short film Barnacle Bill (1935 film), a film starring Archie Pitt and Joan Gardner Barnacle Bill (1941 film), a film starring Wallace Beery and Marjorie Main Barnacle Bill (1957 film), an Ealing Studios comedy film starring Alec Guinness Barnacle Bill, Popeye's rival for Olive Oyl in the 1935 animated cartoon Beware of Barnacle Bill Barnacle Bill and the Seven Seas, a fictional musical group in the animated series SpongeBob SquarePants "Barnacle Bill the Sailor", an American drinking song