Billy Mercer

Billy Mercer may refer to:
 * Billy Mercer (footballer, born 1892) (1892–1956), former Hull City, Huddersfield Town and Blackpool goalkeeper
 * Billy Mercer (footballer, born 1896) (1896–1975), former Preston North End, Blackpool, Lancaster Town and Boston Town player
 * Billy Mercer (footballer, born 1969), former Rotherham United and Chesterfield player, now goalkeeping coach at Burnley FC
 * Billy Mercer (musician), bassist for Strays Don't Sleep