Frederick Thomas or Fred Thomas may refer to:

• Frederick Hall Thomas, birth name of boxer Freddie Welsh
• Frederick William Thomas (writer) (1806-1866), American writer
• Frederick William Thomas (politician), Lord Mayor of Melbourne
• Frederick William Thomas (philologist) (1867-1956), Indologist and Tibetologist
• Fred Thomas (manager), Major League Baseball manager of the 1887
• Fred Thomas (third baseman) (1892-1986), Major League Baseball player from 1918 to 1920
• Fred Thomas (American football) (born 1973), former American football cornerback
• Fred A. Thomas (1865-1958), Montana State Representative
• Fred Thomas (Montana politician) (born 1958), Majority Leader of the Montana Senate
• Frederick Thomas (cricketer) (1917-2003), Scottish cricketer
• Fred Thomas (wrestler) (born 1938), former wrestler from New Zealand

[ Source: Wikipedia ]