Wang Thonglang (Thai: วังทองหลาง, pronounced [wāŋ tʰɔ̄ːŋ.lǎːŋ]) is one of the 50 districts (khet) of Bangkok, Thailand.

It is bounded by other Bangkok districts (from north clockwise): Lat Phrao, Bang Kapi, Huai Khwang, and Chatuchak.

The district was established on 21 November 1997 (announced 14 October 1997) occupying Wang Thonglang and part of Khlong Chan sub-district of Bang Kapi and part of Lat Phrao sub-district of Lat Phrao district.

The name Wang Thonglang means 'the deep body of water around which Erythrina fusca grows'.

This article related to the city of Bangkok, Thailand is a stub.