| Marcin Nowak | |
| Fullname: | Marcin Dariusz Nowak |
| Birth Date: | 26 June 1979 |
| Birth Place: | Tomaszów Mazowiecki, Poland |
| Position: | Defender |
| Clubs1: | Pilica Tomaszów Mazowiecki |
| Years2: | 1995 |
| Clubs2: | Gwarek Zabrze |
| Years3: | 1996–2004 |
| Clubs3: | RKS Radomsko |
| Years4: | 2004–2005 |
| Clubs4: | Volyn Lutsk |
| Caps4: | 14 |
| Goals4: | 0 |
| Years5: | 2005–2007 |
| Clubs5: | Widzew Łódź |
| Caps5: | 42 |
| Goals5: | 1 |
| Years6: | 2007–2008 |
| Clubs6: | Piast Gliwice |
| Caps6: | 30 |
| Goals6: | 3 |
| Years7: | 2008–2011 |
| Clubs7: | Pogoń Szczecin |
| Caps7: | 56 |
| Goals7: | 4 |
| Years8: | 2011–2012 |
| Clubs8: | KS Polkowice |
| Caps8: | 29 |
| Goals8: | 2 |
| Years9: | 2012–2013 |
| Clubs9: | Pogoń Siedlce |
| Caps9: | 32 |
| Goals9: | 1 |
| Years10: | 2013–2014 |
| Clubs10: | Warta Sieradz |
| Caps10: | 35 |
| Goals10: | 2 |
| Years11: | 2014–2016 |
| Clubs11: | Pelikan Łowicz |
| Caps11: | 59 |
| Goals11: | 4 |
| Years12: | 2017 |
| Clubs12: | Widzew Łódź |
| Caps12: | 10 |
| Goals12: | 1 |
Marcin Dariusz Nowak (born 26 June 1979) is a Polish former professional footballer who played as a defender.
Widzew Łódź