| Birth Date: | 26 March 1911 |
| Birth Place: | Perstorp, Sweden |
| Death Date: | 23 April 2001 (aged 90) |
| Death Place: | Sjöbo, Sweden |
| Height: | 1.82m (05.97feet) |
| Weight: | 86kg (190lb) |
| Sport: | Athletics |
| Event: | Javelin throw, decathlon |
| Club: | IFK Knislinge |
| Pb: | JT – 75.10 m (1937) Dec – 6268 (1940) |
| Show-Medals: | yes |
Lennart Folke Alfons Atterwall (born Ohlsson, 26 March 1911 – 23 April 2001) was a Swedish javelin thrower. He finished fourth at the 1936 Summer Olympics and won the European title in 1946. Atterwall held Swedish titles in the javelin throw (1934–35, 37–41 and 1946), pentathlon (1937) and decathlon (1940).