| Martin Nielsen | |
| Fullname: | Martin Ulrich Nielsen |
| Birth Date: | 1973 7, df=yes |
| Birth Place: | Denmark |
| Position: | Midfielder |
| Youthclubs1: | AIA/Tranbjerg |
| Years1: | 19??–1996 |
| Years2: | 1996–1998 |
| Years3: | 1998 |
| Years4: | 1999–2004 |
| Years5: | 2004–2007 |
| Years6: | 2009–2011 |
| Clubs3: | → Huddersfield Town (loan) |
| Clubs6: | BK Søllerød-Vedbæk |
| Caps1: | ? |
| Goals1: | ? |
| Caps2: | 45 |
| Goals2: | 1 |
| Caps3: | 3 |
| Goals3: | 0 |
| Caps4: | 85 |
| Goals4: | 0 |
| Caps5: | 41 |
| Goals5: | 0 |
| Caps6: | ? |
| Goals6: | ? |
| Nationalyears1: | 1992–1994 |
| Nationalteam1: | Denmark u-21 |
| Nationalcaps1: | 9 |
| Nationalgoals1: | 0 |
| Manageryears1: | 2007–2009 |
| Manageryears2: | 2009–2011 |
| Manageryears3: | 2011–2012 |
| Manageryears4: | 2012–2013 |
| Manageryears5: | 2013 |
| Managerclubs1: | Fremad Amager (assistant) |
| Managerclubs2: | BK Søllerød-Vedbæk (assistant) |
| Managerclubs3: | BGA (assistant) |
| Managerclubs4: | BK Søllerød-Vedbæk (assistant) |
| Managerclubs5: | BK Søllerød-Vedbæk |
| Pcupdate: | 30 June 2011 |
Martin Ulrich Nielsen (born 24 July 1973) is a Danish footballer and manager, most recently in charge of BK Søllerød-Vedbæk in the Danish 2nd Division East. He has played nine games for the Danish under-21 national team.
He has previously played for F.C. Copenhagen, FC Midtjylland, AGF Aarhus, English side Huddersfield Town (on loan), Fremad Amager and BK Søllerød-Vedbæk. In December 1997 he had a trial at English club Sheffield Wednesday who were then in the Premier League,[1] however this didn't lead to a transfer.