Faugh-a-Ballagh (foaled 1841 in Ireland) was a Thoroughbred racehorse.

A brother to Birdcatcher, Faugh-a-Ballagh was sold to E. J. Erwin in 1842.

He ran once as a two-year-old at the Doncaster's Champagne Stakes, finishing third to The Cure and Sorella.

He then began his three-year-old season as the first Irish-bred horse to win the St. Leger Stakes, then beat Corona in a match race.

He won the Grand Duke Michael Stakes, then the Cesarewitch, and came second to Evenus at the Cambridgeshire.