Frederick "Frank" G. Costello (1884 – 19 December 1914) was an English professional footballer who played as a forward for Southampton and West Ham United prior to the First World War.

Costello was born in Birmingham and, after playing his youth football with Soho Villa, joined West Bromwich Albion in September 1904.

"[3] The Saints won the match 3–2, but lost to Wolverhampton Wanderers in the semi-final with goals from former Southampton players Wally Radford and George Hedley.

Although Costello scored in his first match in his new role (in a 4–2 victory over Plymouth Argyle on 12 December 1908), he was not a success and in March 1909 he was transferred to West Ham United, with Jack Foster moving in the opposite direction.

He failed to make the first team at Bolton and after spells with Nelson and Merthyr Town he returned to Southampton, where he turned out occasionally for Salisbury City.