1966 was the 67th season of County Championship cricket in England. It featured an entertaining Test series between England and West Indies in which the great West Indian all-rounder Gary Sobers was outstanding. In domestic cricket, Yorkshire, led by Brian Close, won the County Championship. Close became England's captain too.

• County Championship – Yorkshire
• Gillette Cup – Warwickshire
• Minor Counties Championship – Lincolnshire
• Second XI Championship – Surrey II
• Wisden – Bob Barber, Basil D'Oliveira, Colin Milburn, John Murray, Seymour Nurse

West Indies won the series 3–1 with one match drawn.

Gary Sobers topped the averages with 1,349 runs @ 61.31

Derek Underwood topped the averages with 157 wickets @ 13.80