| Birth Date: | 4 April 1925 |
| Birth Place: | Amsterdam, the Netherlands |
| Death Date: | 2 September 1995 (aged 70) |
| Death Place: | Amsterdam, the Netherlands |
| Sport: | Diving |
| Club: | HDZ, Amsterdam |
| Show-Medals: | yes |
Helena Gerarda Catharina "Lenie" Lanting-Keller (4 April 1925 – 2 September 1995) was a Dutch diver. She competed at the 1952 Summer Olympics in the 3 m springboard and finished in 14th place.