Kasımoğlu is a neighborhood in Tuşba District, in Van Province, Türkiye. Kasımoğlu lies at 1,729 m above sea level, 1.7 km from the Erek Dağı mountains. It has 388 inhabitants. The nearest city is Bostaniçi, 19.8 km to the south. Among the landmarks around are Van Fortress (21 km), Tushpa (22 km) and Ayanis (18.0 km).