Hakon Leffler

{{Short description|Swedish tennis player and businessman (1887–1972)}}

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

{{Infobox tennis biography

| name = Hakon Leffler

| image = Hakon Leffler 1937.JPG

| caption = Hakon Leffler in 1937

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| birth_date = {{birth date|1887|3|11|df=yes}}

| birth_place = Gothenburg, Sweden

| death_date = {{death date and age|1972|7|31|1887|3|11|df=yes}}

| death_place = Gothenburg, Sweden

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Hakon Leffler (11 March 1887 – 31 July 1972) was a Swedish engineer, businessman and tennis player.{{cite web|url=https://www.olympedia.org/athletes/2624 |title=Hakon Leffler |publisher=Olympedia |access-date=8 June 2021}}

He was the son of merchant Carl Leopold Leffler, studied electrical engineering at the Royal Institute of Technology from 1905 to 1908, and at Uppsala University where he graduated in 1910.[https://runeberg.org/vemarvem/gota48/0577.html Vem är Vem?: Götalandsdelen utom Skåne (1948), p. 577] After having worked at the M.E. Delbanco company 1912–1915, he became the CEO of Svensk oljeslageri AB 1916. In 1929, he became the deputy CEO at Gamlestadens fabriker, a textile company in Gothenburg, and in 1935, its CEO.