- Source: List of Oricon number-one singles of 2003
- Janet Jackson
- Jay Chou
- Tatsuro Yamashita
- Super Junior
- TVXQ
- Wannabe
- Ray Charles
- Led Zeppelin II
- Dancing Queen (ABBA)
- Mamoru Miyano
- List of Oricon number-one singles of 2003
- List of Oricon number-one singles
- List of Oricon number-one albums
- Oricon Singles Chart
- List of Oricon number-one singles of 1993
- List of Oricon number-one singles of 1992
- List of best-selling girl groups
- List of best-selling singles in Japan
- Southern All Stars
- Oricon
Infernal Affairs III (2003)
The Hunted (2003)
Atlantis: Milo’s Return (2003)
2 Fast 2 Furious (2003)
Hulk (2003)
Terminator 3: Rise of the Machines (2003)
Finding Nemo (2003)
Lara Croft: Tomb Raider – The Cradle of Life (2003)
The Last Samurai (2003)
Charlie’s Angels: Full Throttle (2003)
The Triplets of Belleville (2003)
Tupac: Resurrection (2003)
Bad Boys II (2003)
Pirates of the Caribbean: The Curse of the Black Pearl (2003)
Sinbad: Legend of the Seven Seas (2003)
Carandiru (2003)
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The following is a list of Oricon number-one singles of 2003.