| Marcelo | |
| Fullname: | Marcelo Costa Resende Siqueira |
| Birth Date: | 27 January 1987 |
| Position: | Defensive midfielder, Centre back |
| Youthclubs1: | Grêmio FBPA |
| Years1: | 2007–2008 |
| Years2: | 2008–2009 |
| Years3: | 2009–2010 |
| Years4: | 2011–2012 |
| Clubs3: | Ethnikos Achna |
| Clubs4: | ASA |
| Caps1: | ? |
| Caps2: | ? |
| Caps3: | 5 |
| Caps4: | 12 |
| Goals1: | 1 |
| Goals2: | ? |
| Goals3: | 0 |
| Goals4: | 0 |
Marcelo Costa Resende Siqueira (born January 27, 1987, in Porto Alegre) is a Brazilian football player, last played for Agremiação Sportiva Arapiraquense.