Frederick William Mathias MC (7 August 1898 – 19 April 1955) was a Welsh cricketer. Mathias was a right-handed batsman who bowled right-arm off spin. He was born at Abercynon, Glamorgan, and was educated at Clifton College. Outside of cricket he worked as a stockbroker, but also worked at Cardiff Docks. He died at Radyr, Glamorgan, on 19 April 1955. His granddaughter, Tania Mathias, became a member of parliament.