Futako-Tamagawa Station is located in Setagaya, Tokyo, Japan, on the north-east bank of the Tama River. The area surrounding the station is commonly called Futako-Tamagawa, and often refers to the Tamagawa and Seta districts of Setagaya, but there is no precise definition. It is colloquially referred to as "Futako" (フタコ) or "Nikotama" (ニコタマ), from an alternate reading of the first three kanji characters in the name.