The Kuala Selangor District is a district in Selangor, Malaysia. It has a total landmass of 1,194.52 square kilometres (461 sq mi) separated by Selangor River into two division, Tanjung Karang and Kuala Selangor. The district boundary is shared with Sabak Bernam at the north, Hulu Selangor and Gombak at the west, Petaling at the southwest and Klang at the south.