1°20′33″N 103°41′30″E / 1.3425866°N 103.6916102°E
Hong Kah Group Representation Constituency was a five-member Group Representation Constituency located in the western area of Singapore. The constituency covered the areas of Bukit Batok, Choa Chu Kang, Upper Bukit Timah, Jurong West and Lim Chu Kang. Hong Kah GRC was formed in 1988 and eventually dissolved and reformed into Chua Chu Kang GRC in 2011. It had always been held by the People's Action Party.
It was divided into five sub-areas namely, Bukit Gombak, Hong Kah, Keat Hong, Nanyang and Yew Tee. In 2001, Bukit Gombak SMC was absorbed into the GRC with the town council being Hong Kah Town Council.
It was a huge constituency in terms of land area and covered the entire north-western region of Singapore and its territorial waters in the Straits of Johor.