Isu Station (Korean: 총신대입구(이수)역) is a subway station on the Seoul Subway Line 4 and Line 7 in Dongjak-gu, Seoul, South Korea.

Both lines are two-sided, two-way platforms, with screen doors installed.

The stations on both lines are curved platforms, so the gap between the platform and the train is wide, so care must be taken not to fall out when getting on and off.

Before the construction of Seoul Subway Line 7, the station's name was officially Chongshin Univ.

Therefore, Isu station currently holds two different names depending on the subway route, "Chongshin Univ.