Frederick Alexander Seymour Sewell (6 October 1881 – 5 June 1964) was an English cricketer. Sewell was a right-handed batsman who bowled right-arm slow. He was born at Leamington Spa, Warwickshire. While studying at St Catharine's College, Cambridge, Sewell made his first-class debut for Cambridge University against AJ Webbe's XI in 1901. He made four further first-class appearances for the university, the last of which came against Surrey in 1902. In his five first-class appearances, he scored 69 runs at an average of 11.50, with a high score of 19 not out. With the ball, he took 6 wickets at a bowling average of 35.50, with best figures of 3/71. He was however not awarded a Cambridge Blue.