| Birth Date: | 29 May 1949 |
| Birth Place: | Dordrecht, Netherlands |
| Death Place: | Kudelstaart, Netherlands |
| Height: | 1.95m (06.4feet) |
| Weight: | 85kg (187lb) |
| Sport: | Swimming |
| Club: | Zwemlust, Utrecht |
| Show-Medals: | yes |
Eltje "Elt" Drenth (29 May 1949 - 3 February 1998) was a Dutch swimmer. He competed at the 1968 Summer Olympics in the 200 m and freestyle events, but failed to reach the finals.