Halaç is a neighborhood in Hendek District, in Sakarya Province, Türkiye. Halaç lies at 57 m above sea level, 1.7 km from the Akçakoca Dağları mountains. It has 128 inhabitants. The nearest city is Hendek, 8.3 km to the east. Among the landmarks around are Sangarius Bridge (25 km) and Sakarya Museum (22 km).