John Walter Gerald Sparrow (22 January 1903– 22 August 1988) was a British lawyer, judge and travel writer.

[3][4] Sparrow practised as a barrister in Manchester in the mid-1920s, then (invited by the Crown Prince) emigrated to Siam (now Thailand), where he was appointed, in 1930 and aged only 26 or 27, as a judge on the International Court (which tried cases involving non-Thais) in Bangkok.

[2] In 1941, during the Second World War, the Japanese invaded Thailand and Sparrow was interned under harsh conditions.

[5] Sparrow was the president of the Club of Ten, a pro-apartheid organization whose members included South African, British, American businessmen.

"[5] However, the club was founded by Connie Mulder and Eschel Rhoodie, and the real aim was to publish "advertisements in the newspapers and otherwise do publicity work extolling the policies of the South African government".