is a railway station on the Rinkai Line in Kà Âtà Â, Tokyo, Japan, operated by Tokyo Waterfront Area Rapid Transit (TWR). The station serves the Tokyo Big Sight exhibition centre, after which it is named. Its station number is R-03. Opened on 30 March 1996, the station is located within walking distance of Ariake Station on the Yurikamome, an automated transit line. The station is also near a large bus plaza that serves as a stop on the Tokyo BRT line.
Kokusai-Tenjijà  Station is served by the Rinkai Line from to . The station is situated between and stations, and is 3.51 km from the starting point of the Rinkai Line at Shin-Kiba.
Many trains inter-run over the JR East Saikyo Line and Kawagoe Line to in Saitama Prefecture.
The station has a single underground island platform serving two tracks.
Chest-height platform edge doors were installed during fiscal 2018.
In 2019, a 2.6 by 8.8-meter large ceramic relief by Manga legend Osamu Tezuka was permanently installed. It was produced by the well-known ceramic studio CREARE Atami-Yugawara Studio which spent roughly ten months creating this artwork.
The station opened on 30 March 1996.
Station numbering was introduced in 2016 with Kokusai-Tenjijà  being assigned station number R03.
In fiscal 2014, the station was used by an average of 33,308 passengers daily (boarding passengers only), making it the third busiest station on the Rinkai Line, after Osaki and Oimachi.