John Farrelly may refer to:
John W. Farrelly (1809–1860), Whig member of the U.S. House of Representatives from Pennsylvania John V. Farrelly (born 1954), Irish Fine Gael party politician, former TD and senator John Farrelly (Australian architect), architect in Queensland, Australia (see Penrhyn, Ipswich) John Farrelly (director), Irish writer, director and producer Johnny Farrelly, Jockey, see 2010 Grand National