| Marcel Klefenz | |
| Fullname: | Marcel Klefenz |
| Height: | 1.90 m |
| Birth Date: | 1986 4, df=yes[1] |
| Birth Place: | Heidelberg, West Germany |
| Position: | Defender |
| Youthclubs1: | SC 08 Reilingen |
| Youthclubs2: | SV Sandhausen |
| Youthyears3: | –2003 |
| Youthclubs3: | Karlsruher SC |
| Youthyears4: | 2003–2005 |
| Youthclubs4: | SC Freiburg |
| Years1: | 2005–2007 |
| Clubs1: | SC Freiburg II |
| Caps1: | 57 |
| Goals1: | 6 |
| Years2: | 2007–2009 |
| Clubs2: | 1899 Hoffenheim II |
| Caps2: | 64 |
| Goals2: | 2 |
| Years3: | 2009–2012 |
| Clubs3: | VfR Aalen |
| Caps3: | 30 |
| Goals3: | 3 |
| Years4: | 2012–2013 |
| Clubs4: | VfR Aalen II |
Marcel Klefenz (born 20 April 1986) is a German former footballer who played as a defender.[1]
Klefenz made his professional debut in the 3. Liga for VfR Aalen on 21 August 2010, starting in the match against SV Babelsberg, which finished as a 1–3 away loss.[2]