Heather Seymour "Judy" Guinness (14 August 1910 – 24 October 1952) was a British fencer. She won a silver medal in the women's individual foil event at the 1932 Summer Olympics. The judges had awarded her the gold medal but, in a noted gesture of fair play, she informed them they had failed to count two hits achieved by her Austrian opponent Ellen Preis.
|Birth name||Heather Seymour Guinness|
|Full name||Judy Guinness Penn-Hughes|
|Born||14 August 1910|
|Died||24 October 1952 (aged 42)|
Matabeleland North, Rhodesia
She was a daughter of Henry Guinness (d.1945), an Irish engineer, banker and politician. In 1934 she married the racing driver Clifton Penn-Hughes. He died in a plane crash and she remarried John Henning in 1942. She died in 1952 at Springhare Farm in Rhodesia.
- "Olympics Statistics: Judy Guinness". databaseolympics.com. Archived from the original on 17 October 2012. Retrieved 3 May 2010.
- "Judy Guinness Olympic Results". sports-reference.com. Archived from the original on 17 April 2020. Retrieved 2 October 2019.
- "The 10 most sporting gestures", The Guardian, 29 March 2009