Frederick Oswald Thomas (19 November 1917 – 20 February 2003) was a Scottish cricketer. Thomas was a right-handed batsman who bowled right-arm medium pace. He was born at Corstorphine, Midlothian.
In 1947, Thomas made a single Minor Counties Championship appearance for Cambridgeshire against Norfolk.
Thomas also played a single first-class match for Scotland against Worcestershire in 1951. In his only first-class match, he scored 21 runs at a batting average of 10.50, with a high score of 21.
Thomas died at Edinburgh, Midlothian on 20 February 2003.