| Oktavianus | |
| Fullname: | Oktavianus Erwin Eramuri |
| Height: | 1.65 m |
| Birth Date: | 1 October 1981 |
| Birth Place: | Padang, Indonesia |
| Position: | Left winger |
| Youthyears2: | 2002 |
| Youthclubs1: | Semen Padang |
| Youthclubs2: | PON Sumsel |
| Years1: | 2001−2006 |
| Caps1: | 139 |
| Goals1: | 8 |
| Years2: | 2007−2010 |
| Caps2: | 41 |
| Goals2: | 2 |
| Years3: | 2010−2011 |
| Caps3: | 39 |
| Goals3: | 1 |
| Years4: | 2012 |
| Caps4: | 10 |
| Goals4: | 0 |
| Years5: | 2013–2014 |
| Caps5: | 18 |
| Goals5: | 0 |
| Years6: | 2014–2015 |
| Caps6: | 7 |
| Goals6: | 0 |
| Years7: | 2016–2017 |
| Caps7: | 20 |
| Goals7: | 0 |
Oktavianus Erwin Eramuri (born 1 October 1981) is an Indonesian former footballer. His natural position is left midfielder and he is 165 cm tall.