Denis Gremelmayr
Denis Gremelmayr is an inactive German male tennis player. His career-high singles ranking is World No. 59, achieved in May 2008.
Glemelmayr was born in Heidelberg, Baden-Württemberg. He reached the semifinals of Estoril, Barcelona and Los Angeles in 2008, losing to Roger Federer, Rafael Nadal and Andy Roddick respectively.Singles titles (14)
| No. | Date | Tournament | Surface | Opponent | Score |
| 1. | September 25, 2000 | Kawaguchi | Hard |  Leigh Holland | 6–1, 6–2 |
| 2. | January 8, 2001 | Jorhat | Clay |  Fabio Maggi | 7–6, 7–5 |
| 3. | October 8, 2001 | Santo Domingo | Clay |  José de Armas | 6–4, 6–0 |
| 4. | January 21, 2002 | Dubai | Hard |  Jaroslav Levinský | W/O |
| 5. | August 25, 2003 | Enschede | Clay |  Robert Lindstedt | 6–3, 3–6, 6–3 |
| 6. | November 1, 2004 | Bangkok | Hard |  Ruben de Kleijn | 6–4, 6–0 |
| 7. | June 27, 2005 | Heerhugowaard | Clay |  Nicolás Todero | 6–4, 6–2 |
| 8. | July 4, 2005 | Kassel | Clay |  Sascha Klör | 6–2, 6–1 |
| 9. | September 3, 2007 | Düsseldorf | Clay |  Andreas Haider-Maurer | 6–7, 6–2, 6–4 |
| 10. | November 5, 2007 | Eckental | Carpet |  Roko Karanušić | W/O |
| 11. | November 3, 2008 | Eckental | Carpet | Roko Karanušić | 6–2, 7–5 |
| 12. | May 23, 2010 | Cremona | Hard |  Marius Copil | 6–4, 7–5 |
| 13. | July 5, 2010 | Scheveningen | Clay | Thomas Schoorel | 7–5, 6–4 |
| 14. | July 19, 2010 | Poznań | Clay |  Andrey Kuznetsov | 6–1, 6–2 |
