| Birth Date: | 1976 5, df=yes |
| Birth Place: | Dresden, East Germany |
| Height: | 1.76 m |
| Position: | Right-back |
| Youthyears1: | –1995 |
| Youthclubs1: | Dynamo Dresden |
| Years1: | 1995–1996 |
| Clubs1: | Dynamo Dresden |
| Caps1: | 30 |
| Goals1: | 0 |
| Years2: | 1996–1997 |
| Clubs2: | 1860 Munich (A) |
| Caps2: | 8 |
| Goals2: | 1 |
| Years3: | 1996–1997 |
| Clubs3: | 1860 Munich |
| Caps3: | 8 |
| Goals3: | 0 |
| Years4: | 1997–1998 |
| Clubs4: | Greuther Fürth |
| Caps4: | 19 |
| Goals4: | 0 |
| Years5: | 1998–2000 |
| Clubs5: | Waldhof Mannheim |
| Caps5: | 27 |
| Goals5: | 0 |
| Years6: | 2000–2002 |
| Clubs6: | Dresdner SC |
| Caps6: | 43 |
| Goals6: | 4 |
| Years7: | 2002–2005 |
| Clubs7: | Rot-Weiss Essen |
| Caps7: | 76 |
| Goals7: | 3 |
| Years8: | 2005–2006 |
| Clubs8: | Rot-Weiß Oberhausen |
| Caps8: | 33 |
| Goals8: | 0 |
| Years9: | 2006–2013 |
| Clubs9: | SV Straelen |
| Nationalyears1: | 1996–1997 |
| Nationalteam1: | Germany U-21 |
| Nationalcaps1: | 13 |
| Nationalgoals1: | 0 |
Ronny Ernst (born 7 May 1976) is a German former professional footballer who played as a right-back.[1]