| Niche | |
| Fullname: | Dionisio Fernandes Mendes |
| Birth Date: | 21 September 1981 |
| Birth Place: | Bissau, Guinea-Bissau |
| Position: | Striker |
| Years1: | 2000–2001 |
| Years2: | 2001–2002 |
| Years3: | 2002–2004 |
| Years4: | 2004–2005 |
| Years5: | 2006 |
| Years6: | 2006–2008 |
| Years7: | 2008 |
| Years8: | 2009 |
| Years9: | 2009–2010 |
| Years10: | 2010–2011 |
| Years11: | 2011 |
| Years12: | 2012 |
| Clubs12: | Stade Tunisien |
| Caps1: | 29 |
| Goals1: | 9 |
| Caps2: | 13 |
| Goals2: | 6 |
| Caps3: | 58 |
| Goals3: | 29 |
| Caps4: | 43 |
| Goals4: | 6 |
| Caps5: | 14 |
| Goals5: | 5 |
| Caps6: | 49 |
| Goals6: | 25 |
| Caps7: | 11 |
| Goals7: | 0 |
| Caps8: | 10 |
| Goals8: | 0 |
| Caps9: | 13 |
| Goals9: | 0 |
| Caps10: | 16 |
| Goals10: | 2 |
| Caps11: | 1 |
| Goals11: | 0 |
| Caps12: | 10 |
| Goals12: | 0 |
| Nationalyears1: | 2003– |
| Nationalteam1: | Guinea-Bissau[1] |
| Nationalcaps1: | 12 |
| Nationalgoals1: | 2 |
| Pcupdate: | 1 September 2008 |
Dionísio Fernandes Mendes (born May 21, 1981, in Bissau), nicknamed Niche,[2] [3] [4] is a Bissau-Guinean football striker.
Some of his other former teams include Lourinhanense, Torreense, Vilafranquense, Leixões, Barreirense, Stade Tunisien and AEK Larnaca of Cyprus.