| Birth Date: | 8 November 1921 |
| Birth Place: | Kankaanpää, Finland |
| Death Date: | 24 February 1966 (aged 45) |
| Death Place: | Kangasala, Finland |
| Height: | 165 cm |
| Weight: | 52–60 kg |
| Sport: | Wrestling |
| Club: | Vaasan Toverit TUL |
| Show-Medals: | yes |
Vilho Lennart "Lenni" Viitala (8 November 1921 – 24 February 1966) was a Finnish flyweight wrestler who won gold medals in freestyle wrestling at the 1946 European Athletics Championships and 1948 Olympics. Domestically Viitala won five freestyle (1946–49, 1956) and one Greco-Roman title (1953). He was a carpenter by profession.