Iwamotocho Station (岩本町駅, Iwamotochō-eki) is a subway station on the Toei Shinjuku Line in Chiyoda, Tokyo, Japan, operated by Tokyo Metropolitan Bureau of Transportation (Toei).

Iwamotocho Station is served by the Toei Shinjuku Line, and lies 7.3 km from the starting point of the line at Shinjuku.

Iwamotocho Station consists of two island platforms serving three tracks.

[1] In fiscal 2011, the station was used by an average of 40,324 passengers daily.

[1] The station is located 200 meters southeast of Akihabara near the Kanda River, underneath the intersection of National Route 4 (Shōwa-dōri) and Tokyo Metropolitan Route 302 (Yasukuni-dōri).