Alexander Rutherford Knight (24 January 1899 – 8 April 1986) was a New Zealand cricketer who played first-class cricket from 1919 to 1943.
Alec Knight was born in Dunedin.
He played 51 first-class matches for Otago, mostly as an opening batsman.
He scored 56 and 152 (his only first-class century) for Otago against Canterbury in 1940-41.