During the 2002–03 English football season, Swansea City competed in the Football League Third Division.

Swansea narrowly avoided relegation from the Football League, just over 20 years after coming sixth in the top flight, with a final 21st-place finish. Swansea were in danger of relegation, but won their final game of the season to assure their status as a Football League club.

Swansea fared little better in the domestic cups, being knocked out in the first round of both the FA Cup (by Third Division York City) and League Cup (by First Division Wolverhampton Wanderers).

Squad at end of season

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

No. Pos. Nation Player 1 GK   WAL Roger Freestone 2 DF   WAL Lee Jenkins 3 DF   ENG David Smith 3 DF   ENG Leon Hylton (on loan from Aston Villa) 4 DF   WAL Kristian O'Leary 5 DF   ENG Jason Smith 7 MF   WAL Andrew Mumford 8 MF   ENG Matt Murphy 9 FW   WAL James Thomas 10 FW   WAL Steve Watkin 11 MF   WAL Jonathan Coates 12 GK   WAL Andrew Marsh 12 DF   ENG Alan Tate (on loan from Manchester United) 14 FW   ENG Marc Richards (on loan from Blackburn Rovers) 15 FW   ENG Kevin Nugent 15 FW   WAL Jonathan Keaveny 17 DF   WAL Terry Evans 18 MF   WAL Gareth Phillips

No. Pos. Nation Player 19 FW   ENG John Williams 20 DF   ENG Michael Howard 21 DF   ENG Neil Sharp 23 MF   ENG Nick Cusack 23 MF   IRL Kieron Durkan 24 MF   ENG Lenny Johnrose 25 FW   CAY Jamie Wood 26 DF   WAL Richard Duffy 27 MF   IRL Brian Cash (on loan from Nottingham Forest) 27 MF   ESP Roberto Martínez 28 DF   WAL Stuart Jones 29 MF   ENG Antonio Corbisiero 30 FW   ENG Jamie Rewbury 32 FW   WAL Craig Stiens (on loan from Leeds United) 33 GK   ENG Neil Cutler (on loan from Stoke City) 35 MF   ENG Leon Britton (on loan from West Ham United) 39 MF   ENG Brad Maylett (on loan from Burnley)

Note: Flags indicate national team as defined under FIFA eligibility rules. Players may hold more than one non-FIFA nationality.

No. Pos. Nation Player 6 DF   ENG David Theobald (to Cambridge United) 11 MF   ENG Paul Reid (to Carmarthen Town) 14 MF   ENG Michael Jackson (to Bath City)

No. Pos. Nation Player 16 MF   ENG David Moss (to Hednesford Town) 22 MF   ENG Damien Lacey (retired) 24 MF   WAL Leigh De-Vulgt (to Carmarthen Town)