Colin Ronald Michael Atkinson CBE (23 July 1931 – 25 June 1991) was an English first-class cricketer, schoolmaster and the headmaster of Millfield School.

Born at Thornaby, Yorkshire, Atkinson was educated at St. Mary's Grammar School, Hummersknott, Darlington and later at Durham University, where he studied history, Latin, and English.

In 1960, Atkinson appeared only in the school holidays, and achieved little with the bat, though he took his first five-wicket haul, five for 56, against Kent on the spin-friendly pitch at Clarence Park, Weston-super-Mare.

He was an instant success: Somerset led the County Championship table in June 1965, an unaccustomed position, and though Atkinson's batting was unreliable – he averaged less than 15 runs per innings for the season – and his spin bowling days were over, he developed as a tight medium-paced bowler, taking 38 wickets at under 24 runs apiece and complementing Somerset's pace attack of Fred Rumsey and Ken Palmer.

Having retired from playing, Atkinson remained influential as a cricket administrator inside the Somerset club.

As at Millfield, Atkinson was responsible for a lot of building work at the Taunton ground, where he supervised the construction of the new pavilion.