| Saturday Knight | |
| Birth Name: | Arnold Sedgfield Knight |
| Birth Date: | 16 December 1885 |
| Birth Place: | Burgersdorp, Cape Colony |
| Death Date: | 1 July 1946 |
| Death Place: | Pumala Farm, White River, Transvaal |
| Ru Position: | Forward |
| Repteam1: | South Africa |
| Repyears1: | 1912–1913 |
| Repcaps1: | 5 |
| Reppoints1: | 0 |
Arnold Sedgfield "Saturday" Knight (16 December 1885 - 1 July 1946) was a South African international rugby union player.
Knight, who played his club rugby with the Pirates, represented Transvaal in provincial fixtures. He was a member of the South African side which toured the British Isles, France and Ireland in 1912/13. A forward, he appeared in all five Test matches, making his debut against Scotland and then playing Ireland, Wales, England and France.[1]
He also played a first-class cricket match, for a "Rest of South Africa" team, against Wanderers in 1908. He scored five in his first innings and 15 in the second.[2]