Thomas Robert Limerick (January 7, 1902 – May 23, 1938) was an American criminal, who took part in the third documented escape attempt from Alcatraz Island on the night of May 23, 1938.

Originally a boxcar bandit, he joined a gang of bank robbers headed by Maurice Denning based in Gage County, Nebraska in 1934.

Limerick was arrested in a nightclub in St. Joseph, Missouri on May 25, 1935, and eventually sentenced to life imprisonment at Leavenworth Penitentiary, but later transferred to Alcatraz.

Once the supervisor was rendered unconscious, the convicts would escape through a window to the rooftop, where they would incapacitate an armed guard and leave the island via a seized police boat.

They enacted their escape plan on May 23, 1938, in the prison's mat shop, where they assaulted Custodial Officer Royal Cline with hammer blows to his head.