| Denis Naegelen | |
| Birth Date: | 1952 3, df=yes |
| Plays: | Right-handed |
| Singlesrecord: | 16–27 |
| Singlestitles: | 0 |
| Highestsinglesranking: | No. 131 (14 June 1976) |
| Australianopenresult: | 2R (1973) |
| Frenchopenresult: | 3R (1980) |
| Doublesrecord: | 21–31 |
| Doublestitles: | 1 |
| Australianopendoublesresult: | 2R (1973) |
| Frenchopendoublesresult: | 3R (1975) |
Denis Naegelen (born 14 March 1952) is a former professional tennis player from France.
Naegelen competed in the French Open every year from 1973 to 1983, with the exception of 1979.[1] He had his best singles performance at the 1980 French Open, where he beat Jiří Hřebec and Terry Rocavert.[2] In third round he wasted a two set lead to lose to American Ferdi Taygan, 9–11 in the fifth.[2] He also took part in the 1973 Australian Open and made the second round of both the singles and doubles.[2]
In 1976, Naegelen was a quarter-finalist at a Grand Prix tournament in Madrid.[2]
He and Patrice Dominguez were doubles champions at the 1979 Bordeaux Open.[2]