This is a list of squads named for the seventh edition of Cricket World Cup (2003 Cricket World Cup), held in South Africa, Zimbabwe and Kenya between 9 February and 23 March 2003. The tournament saw 14 teams selected and placed in two groups. Each country was required to submit a final list of 15 players by 31 December 2002. An injured player could be replaced at any time up until the end of the tournament. Replacement players who were not in the original 15-man squad are indicated in italics. The oldest player at the 2003 Cricket World Cup was Lennie Louw (43) of Namibia while the youngest was Talha Jubair (17) of Bangladesh.

Group A

Australia

Australia announced its squad for the 2003 World Cup on 31 December 2002. Australia made three replacements in the squad – Ian Harvey replacing Shane Watson on 25 January 2003, Nathan Hauritz replacing Shane Warne on 24 February 2003, and Nathan Bracken replacing Jason Gillespie on 5 March 2003. Coach: John Buchanan

England

The English squad for the 2003 Cricket World Cup was announced on 31 December 2002. Coach: Duncan Fletcher

India

The India squad for the tournament was announced on 30 December 2002. Coach: John Wright

Namibia

Coach: Dougie Brown

Netherlands

Coach: Emmerson Trotman

Pakistan

Coach: Richard Pybus

Zimbabwe

Coach: Geoff Marsh

Group B

Bangladesh

Coach: 🇵🇰 Mohsin Kamal

Canada

Coach: Gus Logie

Kenya

Coach: Sandeep Patil

New Zealand

Coach: John Bracewell

South Africa

Coach: Eric Simons

Sri Lanka

Coach: Dav Whatmore

West Indies

Coach: Roger Harper