Thomas Bayly may refer to:Thomas Bayly (1775–1829), Maryland congressman Thomas Monteagle Bayly (1775–1834), Virginia congressman Thomas H. Bayly (1810–1856), Virginia congressman and son of Thomas M. Bayly Thomas Haynes Bayly (1797–1839), English poet and songwriter Thomas Bayly (bishop), Anglican bishop in Ireland Thomas Bayly or Thomas Bailey (priest), religious controversialist Thomas Bayly or Thomas Baily, Master of Clare Hall and Catholic priest