Denis Thomson Lindsay (4 September 1939 – 30 November 2005) was a South African cricketer who played 19 Test matches for South Africa between 1963 and 1970. His outstanding series was against Australia in 1966–67, when he scored 606 runs in seven innings, including three centuries, took 24 catches as wicketkeeper and conceded only six byes. Of all wicketkeepers in Test history with a career of 10 Tests or more, he has the lowest number of byes per Test, with 20 byes conceded in the 15 Tests in which he kept wicket; the best keepers generally average around 3 or 4 byes per Test.