- Apr 2 Valentin Afonin, Russian soccer defender (42 caps; SKA Rostov-on-Don, CSKA Moscow), dies at 81
- Apr 3 Yevgeniy Zagorulko, Russian high jump coach (Andrey Silnov, Yelena Yelesina, Anna Chicherova), dies of COVID-19 at 78
- Apr 7 Doug Holden, English soccer winger (5 caps; Bolton Wanderers, Preston North End), dies at 90
- Apr 7 Tommy Raudonikis, Australian rugby league halfback (20 Tests; Rothmans Medal 1972; Wests, Newtown) and coach (Wests, NSW), dies from cancer at 70
- Apr 7 Viktor Kurentsov, Belarusian weightlifter (Olympic gold middleweight 1968; silver 1964; 5 x World C'ship gold middleweight), dies at 80
- Apr 8 Conn Findlay, American rower (Olympic gold coxed pair 1956, 64) and sailor (Olympic bronze Tempest 1976), dies at 90
- Apr 8 Diána Igaly, Hungarian sport shooter (Olympic gold women's skeet 2004; bronze 2000), dies from COVID-19 at 56
- Apr 9 Ekkehard Fasser, Swiss bobsledder (Olympic gold, four-man 1988; World C'ship gold 1983; World Cup champion 1985-86), dies at 68
- Apr 11 Colin Baker, Welsh soccer wing half (7 caps; Cardiff City 298 games), dies at 86
- Apr 11 Marco Bollesan, Italian rugby union number 8 (47 caps; CUS Genova, Partenope) and coach (Italy 1985-88), dies at 79
- Apr 11 Massimo Cuttitta, Italian rugby union prop (69 caps [captain 16]; Milano, Harlequins, Bologna), dies from COVID-19 at 54
- Apr 13 Bobby Leonard, American Basketball Hall of Fame coach (ABA C'ship 1970, 72, 73; Indiana Pacers) & point guard (Minneapolis/LA Lakers, Chicago Packers/Zephyrs), dies at 88
- Apr 15 Leroy Keyes, American College Football Hall of Fame and NFL running back / safety (Purdue; Philadelphia Eagles, Kansas City Chiefs), dies from heart failure at 74
- Apr 16 John Dawes, Welsh rugby union centre (22 caps Wales, 4 caps British & Irish Lions; London Welsh; Barbarians), dies at 80
- Apr 16 Johnny Peirson, Canadian ice hockey right wing (NHL All Star 1950, 51; Boston Bruins) and broadcaster (WBZ and WSBK), dies at 95
- Apr 16 Serhiy Novikov, Russian judoka (Olympic gold heavyweight 1976), dies at 71
- Apr 17 Fred Arbanas, American football tight end (All-AFL 1962–67; Super Bowl 1970; Dallas Texans / Kansas City Chiefs), dies at 82
- Apr 19 Monica Bandini, Italian racing cyclist (World Championship gold women's team time trial 1988), dies from a heart attack at 56
- Apr 19 Willy van der Kuijlen, Dutch soccer forward (22 caps; PSV 528 games), dies from Alzheimer's disease at 74
- Apr 21 Håkon Brusveen, Norwegian cross-country skier (Olympic gold 15 km, silver 4 × 10 km relay 1960), dies at 93
- Apr 23 Bill Whittington, American auto racer (24 Hours of Le Mans 1979), dies in a plane crash at 71
- Apr 24 John T. Ward Jr., American racehorse trainer (Kentucky Derby 2001 Monarchos; Breeders' Cup Distaff 1999 Beautiful Pleasure), dies at 75
- Apr 25 John Konrads, Australian swimmer (Olympic gold 1500m freestyle, bronze 400m freestyle, 4x200m freestyle 1960; 26 individual world records), dies at 78
- Apr 26 Dick Mann, American motorcycle racer (A.M.A. Grand National C'ship 1963, 71; Motorcycle Hall of Fame 1998), dies at 86
- Apr 26 Tamara Press, Soviet athlete (Olympic gold shot put 1960, 64; discus 1960, 64), dies at 83
- Apr 29 Courtney Hall, American NFL center (San Diego Chargers), dies at 52
- Apr 29 Zhang Enhua, Chinese soccer defender (65 caps; Dalian Wanda FC, Grimsby Town), dies from cardiac arrest at 48
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