The 1965–66 Sheffield Shield marked the seventy-fourth edition of Australia's premier first-class cricket competition. Five teams took part in the tournament, playing across twenty matches in a double round-robin format.
New South Wales claimed the championship title, securing their thirty-sixth success in the competition. New South Wales batter Grahame Thomas led the run-scoring charts by accumulating 837 runs over the course of the season.
Western Australia bowler Tony Lock dominated the bowling attacks, capturing 41 wickets during the tournament.
Squad lists and statistics via Wikipedia