At the 1920 Summer Olympics in Antwerp, ten swimming events were contested. The women's 300 metre freestyle event was new since the previous Games in 1912. The competitions were held from Sunday August 22, 1920, to Sunday August 29, 1920. There was a total of 116 participants from 19 countries competing.

Medal table

Medal summary

Men's events 100 m freestyle 400 m freestyle 1500 m freestyle 100 m backstroke 200 m breaststroke 400 m breaststroke 4 × 200 m freestyle relayDuke KahanamokuPua KealohaPerry McGillivrayNorman RossFrank BeaurepaireHenry HayWilliam HeraldIvan StedmanHarold AnnisonEdward PeterLeslie SavageHenry Taylor

Women's events 100 m freestyle 300 m freestyle 4 × 100 m freestyle relayEthelda BleibtreyIrene GuestFrances SchrothMargaret WoodbridgeHilda JamesConstance JeansGrace McKenzieCharlotte RadcliffeAina BergJane GyllingEmily MachnowCarin Nilsson

Participating nations A total of 116 swimmers (92 men and 24 women) from 19 nations (men from 17 nations - women from 9 nations) competed at the Antwerp Games:

(men:5 women:1) (men:11 women:1) (men:2 women:0) (men:3 women:0) (men:4 women:0) (men:1 women:0) (men:10 women:3) (men:12 women:6) (men:4 women:0) (men:2 women:0) (men:2 women:0) (men:3 women:1) (men:0 women:1) (men:2 women:0) (men:0 women:1) (men:2 women:0) (men:9 women:4) (men:4 women:0) (men:16 women:6)

References