Tai Koo (Chinese: 太古; pinyin: Tàigǔ; Cantonese Yale: Taaigú) is a station on the Island line of the Hong Kong MTR system.

The works comprised twin tunnels and a station built in a 24-metre span rock cavern.

[2] The Island line opening ceremony was held in this station in May 1985 and was officiated by then-MTR chairman Sir Wilfrid Newton and Governor of Hong Kong Edward Youde,[3] who unveiled the commemorative plaques at the concourse level.

The station is built in what was, at the time of its construction, the largest man-made cavern in Asia.

Unlike most of the other underground stations on the Island line, Tai Koo does not have separate tubes for each track and platform, but is located in a single tube encompassing both the concourse and the platform.