Charles Grethen

Charles Grethen (born 2 June 1992, in Tuntange) is a Luxembourgish middle-distance runner competing primarily in the 800 and 1500 metres. He represented his country at three consecutive European Championships.

Personal bests
Outdoor
 * 800 metres – 1:46.44 (Oordegem-Lede 2016)
 * 1000 metres – 2:18.95 (Pliezhausen 2016)
 * 1500 metres – 3:32.86 (Tokyo 2020) NR
 * One mile- 3:53.20 (Oslo 2022) NR

Indoor
 * 800 metres – 1:48.26 (Metz 2016)
 * 1500 metres – 3:45.05 (Düsseldorf 2016)