| MFC 21: Hard Knocks | |
| Promotion: | Maximum Fighting Championship |
| Date: | May 15, 2009 |
| Venue: | River Cree Resort and Casino |
| City: | Enoch, Alberta |
| Previousevent: | MFC 20: Destined for Greatness |
| Followingevent: | MFC 22: Payoff |
MFC 21: Hard Knocks was a mixed martial arts event held by the Maximum Fighting Championship (MFC) on May 15, 2009 in Enoch, Alberta.[1] [2]