| Michael Allendorf | |
| Birth Date: | 16 September 1986 |
| Birth Place: | Heppenheim, Germany |
| Nationality: | German |
| Position: | Left wing |
| Currentclub: | MT Melsungen |
| Clubnumber: | 22 |
| Years1: | 2004–2006 |
| Clubs1: | SG Wallau-Massenheim |
| Years2: | 2006–2010 |
| Clubs2: | HSG Wetzlar |
| Years3: | 2010– |
| Clubs3: | MT Melsungen |
| Nationalyears1: | 2007– |
| Nationalteam1: | Germany |
| Nationalcaps1: | 17 |
| Nationalgoals1: | 26[1] |
Michael Allendorf (born 16 September 1986) is a German handball player for MT Melsungen and the German national team.