Derek Thomas Tulk (born 21 April 1934 at Southampton, Hampshire) was an English first-class cricketer.
Tulk was a right-handed batsman who bowled right-arm medium pace.
Tulk represented Hampshire in two first-class matches, the first of which came in 1956 against Gloucestershire.
Tulk's second and final first-class match came in 1957 against Cambridge University.