- Apr 1 Ferdy Vierklau, Dutch soccer left back (2 caps; FC Utrecht; Ajax), born in Bilthoven, Netherlands
- Apr 1 Stephen Fleming, New Zealand cricket batsman and captain (111 Tests; 9 x 100, HS 274no; 280 ODIs; Canterbury, Yorkshire CCC, Chennai Super Kings) and coach (Chennai Super Kings), born in Christchurch, New Zealand
- Apr 3 Greg DeLong, American football player, NFL tight end (Minnesota Vikings), born in Orefield, Pennsylvania
- Apr 3 Kelly Lochbaum, Canadian football linebacker (BC Lions), born in Abbotsford, Canada
- Apr 4 Chris McCormack, Australian triathlete (ITU World Championships), born in Sydney
- Apr 4 Loris Capirossi, Italian Grand Prix motorcycle racer, born in Castel San Pietro Terme, Italy
- Apr 4 Peter Hoekstra, Dutch soccer player (PSV, Ajax), born in Assen, Netherlands
- Apr 4 Ryan Coughlin, Canadian football offensive linebacker (Montreal Alouettes), born in Renfrew, Ontario
- Apr 4 Tiffany Woosley, American basketball player (Houston Comets), born in Shelbyville, Tennessee
- Apr 5 Spencer Folau, Tongan, American football offensive lineman (Baltimore Ravens), born in Nukuʻalofa, Tonga
- Apr 5 Tony Banks, quarterback (St Louis Rams)
- Apr 6 Donnie Edwards, linebacker (KC Chiefs)
- Apr 6 Randall Godfrey, linebacker (Dallas Cowboys)
- Apr 6 Sun Wen, Chinese footballer
- Apr 7 Brett Tomko, American baseball player
- Apr 8 Alex Gonzalez, American infielder (Toronto Blue Jays), born in Miami, Florida
- Apr 8 Khaled Badra, Tunisian footballer, born in Kairouan, Tunisia
Roberto Carlos (51 years old)
Apr 10 Brazilian soccer left back (Brazil 125 caps, Real Madrid), born in Garça, São Paulo, Brazil
- Apr 12 Antonio Osuna, Mexican baseball pitcher (LA Dodgers), born in Sinaloa, Mexico
- Apr 14 Roberto Ayala, Argentine soccer defender (116 caps; Napoli, Valencia, Real Zaragoza; Olympic gold 2004), born in Paraná, Argentina
- Apr 17 Gene Makowsky, Canadian football offensive linebacker (Saskatchewan Roughriders), born in Saskatoon, Saskatchewan
- Apr 17 Jeff Lewis, American NFL quarterback (Denver Broncos-Super Bowl 32), born in Columbus, Ohio
- Apr 17 Kaihō Ryōji, Japanese sumo wrestler, born in Aomori, Japan
- Apr 17 Kenneth Carlsen, Danish tennis star, born in Copenhagen, Denmark
- Apr 17 Ross Aloisi, Australian soccer midfielder (Olyroos, Olympics 1996), born in Adelaide, South Australia
- Apr 17 Theo Ratliff, American NBA forward and center (Detroit Pistons, Philadelphia 76ers), born in Demopolis, Alabama
- Apr 18 Derrick Brooks, American football linebacker (11 × Pro Bowl; Super Bowl 2002; Tampa Bay Buccaneers), born in Pensacola, Florida
- Apr 18 Haile Gebrselassie, Ethiopian 10k runner (Olympic gold 1996), born in Asella, Arsi Province, Ethiopia
- Apr 18 James "Jamie" Koven, American rower (Olympic 5th 1996), born in Morristown, New Jersey
- Apr 20 Itula Mili, NFL tight end (Seattle Seahawks), born in Kahuku, Hawaii
- Apr 20 Lamond Murray, American basketball forward (LA Clippers), born in Pasadena, California
- Apr 20 Todd Hollandsworth, American baseball outfielder (World Series 2003 Florida Marlins; NL Rookie of the Year 1996 LA Dodgers), born in Dayton, Ohio
- Apr 21 Jonathan Nsenga, Belgian athlete
- Apr 22 Adem Poric, Australian former footballer
- Apr 22 Christopher Sanders, tight end (Washington Redskins)
- Apr 22 Ofer Talker, Israeli footballer
- Apr 22 Scott Fields, NFL linebacker (Atlanta Falcons)
- Apr 23 Patrick Poulin, Canadian NHL left wing (Tampa Bay Lightning), born in Vanier, Quebec, Canada
- Apr 24 Eric Snow, American NBA guard (Philadelphia 76ers, Seattle Supersonics), born in Canton, Ohio
- Apr 24 Lee Westwood, English golfer (British Open, US Masters 2010 runner-up), born in Worksop, Nottinghamshire
- Apr 24 Mark Babic, Australian soccer defender (Olyroos, Olympics 1996), born in Sydney, Australia
Sachin Tendulkar (51 years old)
Apr 24 Indian cricket batsman and captain (200 Tests, 15,921 runs @ 53.78, 51 x 100s; highest run scorer in international cricket), born in Mumbai, India
- Apr 25 Alek Stojanov, Canadian NHL right wing (Pitts Penguins), born in Windsor, Ontario, Canada
- Apr 25 Barbara Rittner, German tennis star (1992 Schenectady), born in Krefeld, West Germany
- Apr 25 Paige Gordon, Canadian diver (Olympics-16-92, 96), born in Vancouver, British Columbia
- Apr 26 Chris Perry, English footballer (Tottenham Hotspur), born in Carshalton, England
- Apr 28 Earl Holmes, American linebacker (Pittsburgh Steelers) and coach, born in Tallahassee, Florida
- Apr 28 Francisco Palencia, Mexican footballer
- Apr 28 Marc[us] Blake Schneider, American rower (Olympic bronze 1996), born in Lubbock, Texas
- Apr 28 Zhang Enhua, Chinese soccer defender (65 caps; Dalian Wanda FC, Grimsby Town), born in Dalian, China (d. 2021)
About April 1973
How Old? 51 years old
Generation: Generation X
Leap Year: No