Thomas McGrath may refer to:

• Thomas McGrath (builder) (1896–1988), Northern Irish builder who founded Ulster Garden Villages
• Thomas McGrath (poet) (1916–1990), American poet best known for Letter To An Imaginary Friend
• Thomas C. McGrath Jr. (1927–1994), U.S. Representative from New Jersey
• Tom McGrath (playwright) (1940–2009), Scottish playwright and musician
• Tom McGrath (media executive) (born 1956), Hollywood entertainment executive
• Tom McGrath (animator) (born 1964), animation director
• Tom McGrath (artist) (born 1978), American painter
• Tom McGrath (hurler) (1891–1958), Irish hurler
• Tom McGrath (rugby league) (1898–1976), Australian rugby player
• Tom McGrath (runner) (born 1950), Irish-American runner