Reginald Lawrence Knowles (11 November 1911 – 23 December 1995) was an English film actor who renamed himself Patric Knowles, a name which reflects his Irish descent. He appeared in films of the 1930s through the 1970s. He made his film debut in 1933, and played either first or second film leads throughout his career.

In his first American film, Give Me Your Heart (1936), released in Great Britain as Sweet Aloes, Knowles was cast as a titled Englishman of means.