Royston Knox Simms (1 January 1894 – 12 March 1978) was an Australian-born English cricketer. Simms' batting and bowling styles are unknown. He was born at Adelaide, South Australia, and was educated at Lancing College.

Simms made two first-class appearances for Sussex against Oxford University and Gloucestershire in the 1912 County Championship.^[1] Against Oxford University at Cricket Field Road, Horsham, Sussex won the toss and elected to bat first, making 414 in their first-innings, during which Simms was dismissed for 4 runs by John Vidler. Oxford University made 186 in their first-innings, during which Simms bowled fourteen overs, conceding 41 runs and taking the wicket of Freddie Knott. Sussex forced Oxford University to follow-on in their second-innings, dismissing them for just 81 runs, to win by an innings and 147 runs.^[2] In his second match against Gloucestershire at the County Ground, Hove, Sussex won the toss and elected to bat first, making 352 in their first-innings, during which Simms was dismissed for a single run by Charlie Parker. Gloucestershire responded in their first-innings by making 155, during which Simms bowled nine overs, conceding 23 runs and taking the wicket of Cyril Sewell. Gloucestershire were forced to follow-on in their second-innings, with Sussex dismissing them for 151 to win the match by an innings and 46 runs.^[3]

He died at South Petherton, Somerset, on 12 March 1978. His brother, Harry, also played first-class cricket, and featured alongside Royston against Oxford University.

• Royston Simms at ESPNcricinfo
• Royston Simms at CricketArchive