Thomas McDermott may refer to:
Thomas MacDermot (1870–1933), Jamaican writer Tommy McDermott (1878–1961), Scottish footballer Tom McDermott (musician) (born 1957), American jazz pianist Thomas McDermott Jr. (born 1969), mayor of Hammond, Indiana Tom McDermott (Big Brother), contestant on the first series of Big Brother in the UK Tom McDermott (engineer), American academic Tommy McDermott (footballer, born 2005) (born 2005), English footballer