| Nélson Sampaio | |
| Fullname: | Nélson Roberto Magalhães Sampaio |
| Birth Date: | 4 April 1992 |
| Birth Place: | Marco de Canaveses, Portugal |
| Position: | Centre back / Defensive midfielder |
| Currentclub: | Amarante |
| Youthyears1: | 2003−2008 |
| Youthclubs1: | Vila Meã |
| Youthyears2: | 2008−2009 |
| Youthclubs2: | Porto |
| Youthyears3: | 2009−2011 |
| Youthclubs3: | Leixões |
| Years1: | 2011–2013 |
| Caps1: | 12 |
| Goals1: | 1 |
| Years2: | 2013–2014 |
| Caps2: | 9 |
| Goals2: | 0 |
| Years3: | 2014–2015 |
| Caps3: | 16 |
| Goals3: | 1 |
| Years4: | 2015–2016 |
| Caps4: | 13 |
| Goals4: | 1 |
| Years5: | 2016 |
| Caps5: | 14 |
| Goals5: | 0 |
| Years6: | 2016–2017 |
| Caps6: | 24 |
| Goals6: | 0 |
| Years7: | 2017–2019 |
| Caps7: | 56 |
| Goals7: | 3 |
| Years8: | 2019– |
| Caps8: | 23 |
| Goals8: | 1 |
| Club-Update: | 1 August 2021 |
Nélson Roberto Magalhães Sampaio (born 4 April 1992 in Marco de Canaveses, Porto District) is a Portuguese footballer who plays for Amarante F.C. as a central defender or a defensive midfielder.