Thomas, Tommy or Tom Flanagan may refer to:Thomas Flanagan (bishop) (1930–2019), American Roman Catholic bishop Thomas Flanagan, Irish civil engineer and politician Thomas Flanagan (priest) (1814–1865), English Roman Catholic canon and historian Thomas Flanagan (prospector) (1832–1899), Irish-Australian prospector Thomas Flanagan (writer) (1923–2002), American academic and novelist Tom Flanagan (footballer), Northern Irish footballer Tom Flanagan, American-born writer and academic Tommy Flanagan (musician) (1930–2001), American jazz pianist Tommy Flanagan (actor), Scottish-born actor Thomas John (medium), American celebrity medium Tommy Flanagan, the Pathological Liar, recurring Saturday Night Live character and sketches portrayed by Jon Lovitz in 1985–86 season