The following are the basketball events of the year 2003 throughout the world.

• Men
  • 2003 NBA Finals: San Antonio Spurs over the New Jersey Nets 4-2. MVP: Tim Duncan (More information can be found at 2003-04 NBA season.)
    • 2002-03 NBA season
    • 2003 NBA Playoffs
    • 2003 NBA draft
    • 2003 NBA All-Star Game
  • Eurobasket: Lithuania 93, Spain 84
• Women
  • WNBA Finals: Detroit Shock over Los Angeles Sparks 2-1. MVP: Ruth Riley
    • 2003 WNBA season
    • 2003 WNBA Playoffs
    • 2003 WNBA draft
    • 2003 WNBA All-Star Game
  • Eurobasket Women: Russia def. Czech Republic

• Men
  • NCAA Division I: Syracuse University 81, University of Kansas 78
  • National Invitation Tournament: University of Michigan
  • NCAA Division II: Northeastern State University 75, Kentucky Wesleyan College 64
  • NCAA Division III: Williams College 67, Gustavus Adolphus College 65
  • NAIA Division I Concordia 88, Mountain State 84 OT
  • NAIA Division II Oregon Tech 81, Bellevue (Neb.) 70
• Women
  • NCAA Division I: University of Connecticut 73, University of Tennessee 68
  • Women's National Invitation Tournament: Auburn 64, Baylor 63
  • NCAA Division II: South Dakota State 65, Northern Kentucky University 60
  • NCAA Division III Trinity University (Tex.) 60, Eastern Connecticut State 58
  • NAIA Division I: Southern Nazarene (Okla.) 71, Oklahoma City University 70
  • NAIA Division II Hastings (Neb.) 59, Dakota Wesleyan (S.D.) 53

• Class of 2003:^[1]
  • Leon Barmore
  • Francis D. "Chick" Hearn
  • Earl F. Lloyd
  • Meadowlark Lemon
  • Dino Meneghin
  • Robert L. Parish
  • James A. Worthy

• Class of 2003^[2]

• Leon Barmore
• Tara Heiss
• Claude Hutcherson
• Patsy Neal
• Doris Rogers
• Marsha Sharp

• Men
  • NBA Most Valuable Player Award: Tim Duncan
  • NBA Rookie of the Year Award: Amar'e Stoudemire
  • NBA Defensive Player of the Year Award: Ben Wallace
  • NBA Coach of the Year Award: Gregg Popovich, San Antonio Spurs
  • Euroscar Award: Dirk Nowitzki, Dallas Mavericks and  Germany
  • Mr. Europa: Šarūnas Jasikevičius, Maccabi Tel Aviv and  Lithuania (also FC Barcelona)
• Women
  • WNBA Most Valuable Player Award: Lauren Jackson, Seattle Storm
  • WNBA Defensive Player of the Year Award: Sheryl Swoopes, Houston Comets
  • WNBA Rookie of the Year Award: Cheryl Ford, Detroit Shock
  • WNBA Most Improved Player Award: Michelle Snow, Houston Comets
  • Kim Perrot Sportsmanship Award: Edna Campbell, Sacramento Monarchs
  • WNBA Coach of the Year Award: Bill Laimbeer, Detroit Shock
  • WNBA Finals Most Valuable Player Award: Ruth Riley, Detroit Shock

• Combined
  • Legends of Coaching Award: Roy Williams, Kansas
• Men
  • John R. Wooden Award: T. J. Ford, Texas
  • Naismith College Coach of the Year: Tubby Smith, Kentucky
  • Frances Pomeroy Naismith Award: Jason Gardner, Arizona
  • Associated Press College Basketball Player of the Year: David West, Xavier
  • NCAA basketball tournament Most Outstanding Player: Emeka Okafor, Connecticut
  • USBWA National Freshman of the Year: Carmelo Anthony, Syracuse
  • Associated Press College Basketball Coach of the Year: Tubby Smith, Kentucky
  • Naismith Outstanding Contribution to Basketball: Charles “Lefty” Driesell
• Women
  • Naismith College Player of the Year: Diana Taurasi, Connecticut
  • Naismith College Coach of the Year: Gail Goestenkors, Duke
  • Wade Trophy: Diana Taurasi, Connecticut
  • Frances Pomeroy Naismith Award: Kara Lawson, Tennessee
  • Associated Press Women's College Basketball Player of the Year: Diana Taurasi, Connecticut
  • NCAA basketball tournament Most Outstanding Player: Diana Taurasi, UConn
  • Basketball Academic All-America Team: Kristine Austgulen, VCU
  • Carol Eckman Award: Marsha Sharp, Texas Tech University
  • USBWA National Freshman of the Year: Seimone Augustus, LSU
  • Associated Press College Basketball Coach of the Year: Geno Auriemma, Connecticut
  • List of Senior CLASS Award women's basketball winners: LaToya Thomas, Mississippi State
  • Nancy Lieberman Award: Diana Taurasi, Connecticut
  • Naismith Outstanding Contribution to Basketball: Betty Jaynes

This section is empty. You can help by adding to it. (July 2010)

• January 20 — Dan King, American NBA player (Baltimore Bullets) (born 1931)
• January 29 — John Murphy, American BAA player (Philadelphia Warriors, New York Knicks) (born 1924)
• February 9 — John Hyder, American college coach (Georgia Tech) (born 1912)
• March 29 — Carl Ridd, Canadian Olympic player (1952) (born 1929)
• April 5 — Helgi Jóhannsson, Icelandic basketball player and coach (born 1929)
• April 16 — Jewell Young, All-American college player (Purdue), NBL player (Indianapolis Kautskys, Oshkosh All-Stars) (born 1913)
• May 14 — Dave DeBusschere, American Hall of Fame NBA player (New York Knicks, Detroit Pistons) (born 1940)
• May 14 — Al Fleming, American NBA player (Seattle SuperSonics) (born 1954)
• May 23 — Weenie Miller, American college coach (VMI) (born 1922)
• May 29 — Anthony Frederick, American NBA player (Indiana Pacers, Sacramento Kings, Charlotte Hornets) (born 1964)
• June 16 — David Polansky, American college coach (CCNY) (born 1919)
• June 22 — John Mandic, American NBA player (born 1919)
• September 20 — Ernie Calverley, All-American player and coach at Rhode Island (born 1924)
• October 16 — Chet Jaworski, All-American player (Rhode Island) (born 1916)
• October 23 — Kevin Magee, Former All-American at UC Irvine and Maccabi Tel Aviv player (born 1959)
• October 30 — Stan Szukala, American NBL player (Chicago Bruins, Chicago American Gears) (born 1918)
• November 21 — Bill Haarlow, American NBL player (Whiting Ciesar All-Americans) (born 1913)
• December 8 — Chuck Noe, American college coach (VMI, Virginia Tech, South Carolina, VCU) (born 1924)
• December 9 — Norm Sloan, College basketball coach of the 1974 national champion NC State Wolfpack (born 1926)
• December 26 — Gale Bishop, All-American college (Washington State) and BAA (Philadelphia Warriors) player (born 1922)

• Timeline of women's basketball