Wang Thonglang (, ) 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 total area was 19.205 km<sup>2</sup>. In 2002 (announced 24 January, effective 11 March) the district boundary between Wang Thonglang and Lat Phrao districts was adjusted. Now Wang Thonglang has 18.905 km<sup>2</sup> of area.
The name Wang Thonglang means 'the deep body of water around which Erythrina fusca grows'.
The district is sub-divided into 4 sub-districts (khwaeng).
The district is home to both local and insertional schools, including:
Secondary schools:
International schools:
The District Council for Wang Thonglang has seven members, who each serve four-year terms. Elections were last held on April 30, 2006. The results were as follows: