Ochiai-minami-nagasaki Station (落合南長崎駅, Ochiai-minaminagasaki-eki) is a railway station at the Nishi-Ochiai itchōme intersection of Mejiro Dōri, Shin-Mejiro Dōri and Shin-Ōme-Kaidō in Shinjuku, Tokyo, Japan.

The station opened on December 19, 1997, when Line 12 was extended from Nerima to Shinjuku.

The station lies on the boundary of Shinjuku and Toshima wards.

Before it opened its name was intended to be simply Minami-Nagasaki (from the neighborhood in Toshima ward), but this was changed to reflect its position on the boundary.

This Tokyo railroad station–related article is a stub.