Sinersig is a locality in Boldur Commune, in Timiș County, in the Vest development region, Romania. Sinersig lies at 113 m above sea level. It has 554 inhabitants (2021). The nearest city is Lugoj, 14.1 km to the east. Among the landmarks around are Castra of Duleu - Odăi (18.4 km), Dormition of the Theotokos Church (14.4 km) and Aizis (23 km).