| Justinas Sinica | |
| Position: | Power forward |
| Height M: | 2.03 |
| Weight Kg: | 81 |
| League: | Nationale Masculine 1 |
| Team: | BC Orchies |
| Nationality: | Lithuanian |
| Birth Date: | 31 May 1985 |
| Birth Place: | Zarasai, Lithuanian SSR, Soviet Union |
| Draft Year: | 2007 |
| Career Start: | 2003 |
| Years1: | 2003–2004 |
| Team1: | Aukštaitija Panevėžys |
| Years2: | 2004–2008 |
| Team2: | Sakalai Vilnius |
| Years3: | 2008–2010 |
| Team3: | Lietuvos rytas Vilnius |
| Years4: | 2010–2012 |
| Team4: | Rūdupis Prienai |
| Years5: | 2012 |
| Team5: | Minsk-2006 |
| Years6: | 2012–2013 |
| Team6: | Sakalai Vilnius |
| Years7: | 2013 |
| Team7: | Pieno žvaigždės Pasvalys |
| Years8: | 2013–2015 |
| Team8: | Neptūnas Klaipėda |
| Years9: | 2015–2016 |
| Team9: | San Pablo Inmobiliaria Burgos |
| Years10: | 2016 |
| Team10: | Nevėžis Kėdainiai |
| Years11: | 2016–2017 |
| Team11: | Caen Basket Calvados |
| Years12: | 2017–2018 |
| Team12: | Vytautas Prienai–Birštonas |
| Years13: | 2018 |
| Team13: | RETAbet Bilbao Basket |
| Years14: | 2018-2019 |
| Team14: | Union Tarbes-Lourdes Pyrénées Basket |
| Years15: | 2019-present |
| Team15: | BC Orchies |
Justinas "Justas" Sinica (born 31 May 1985) is a Lithuanian professional basketball player for BC Orchies of the Nationale Masculine 1.
On September 15, 2016, Sinica signed with Nevėžis Kėdainiai of Lithuanian Basketball League.[1] On August 27, 2018, Sinica signed with RETAbet Bilbao Basket of the LEB Oro.[2]