Thomas or Tom Flanagan may refer to: Thomas Flanagan (bishop) (1930–2019), American Roman Catholic bishop Thomas Flanagan (Irish politician) (died 1980), 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) (born 1991), English footballer Tom Flanagan (political scientist) (born 1944), American-born writer and academic Tommy Flanagan (1930–2001), American jazz pianist Tommy Flanagan (actor) (born 1965), Scottish-born actor Thomas John (medium) (born 1984), American celebrity medium Tommy Flanagan, the Pathological Liar, recurring Saturday Night Live character and sketches portrayed by Jon Lovitz in 1985–86 season