Robert Flanagan or Flanigan may refer to:
Robert Flanagan (politician) (born 1945), American politician from Maryland Bob Flanagan (performance artist) (1952–1996), American performance artist and writer Bob Flanigan (singer) (1926–2011), American tenor vocalist and founding member of The Four Freshmen Bob Flanigan (footballer) (1914–1988), Australian rules footballer Bob Flanagan, programmer of the video game Marble Madness Rob Flanagan, contestant on season 2 of The Apprentice