| Full name: | Sidney Frank Viljoen |
| Born: | 31st May 1908, Windsorton, Cape Province, South Africa |
| Died: | 26th December 1959, Klerksdorp, Transvaal, South Africa |
| Bowling: | Right-arm fast-medium |
| Relations: | Brother: KG Viljoen |
| Teams: | Griqualand West (Main FC: 1931/32-1946/47); Transvaal (Main FC: 1934/35); All teams |
| Lists of matches and more detailed statistics | |
| First-Class Career Batting and Fielding (1931/32-1946/47) | ||||||||||
| M | I | NO | Runs | HS | Ave | 100 | 50 | Ct | ||
| Overall | 20 | 29 | 8 | 478 | 72 | 22.76 | 0 | 1 | 16 | |
| First-Class Career Bowling (1931/32-1946/47) | ||||||||||
| Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM | SRate | Econ | |
| Overall | 2346 | 28 | 1143 | 47 | 6-91 | 24.31 | 1 | 0 | 49.91 | 2.92 |