Jack Lumsden

{{short description|Modern pentathlete}}

{{Use dmy dates|date=February 2025}}

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| name = Jack Lumsden

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| birth_date = {{birth date|1927|4|25|df=yes}}

| birth_place = Marylebone, London, England

| death_date = {{death date and age|2012|10|22|1927|4|25|df=yes}}{{cite web|url = http://www.henleyhall.co.uk/history|title = John Michael George Lumsden (JMG) 1927-2012|last = Lumsden|first = Charles|year = 2015|publisher = Henley Hall, Shropshire|access-date = 30 April 2017|archive-url = https://web.archive.org/web/20140925041516/http://henleyhall.co.uk/history|archive-date = 25 September 2014|url-status = dead}}

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| sport = Modern pentathlon

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John Michael George "Jack" Lumsden (25 April 1927 – 22 October 2012){{Olympedia|34791}} was a British modern pentathlete. He was the son of Lieutenant-General Herbert Lumsden and brother of Peter Lumsden (racing driver). He competed at the 1948 Summer Olympics.{{cite web|url=https://www.sports-reference.com/olympics/athletes/lu/jack-lumsden-1.html |title=Jack Lumsden Olympic Results |accessdate=13 July 2012 |work=sports-reference.com |url-status=dead |archiveurl=https://web.archive.org/web/20121114191723/http://www.sports-reference.com/olympics/athletes/lu/jack-lumsden-1.html |archivedate=14 November 2012}}