The 2003–04 season was the sixth season in the history of Northern Spirit (now North West Sydney Spirit). It was also the sixth and final season in the National Soccer League. Northern Spirit finished 7th in their National Soccer League season.

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

No. Pos. Nation Player 1 GK  AUS Paul Henderson 2 DF  ENG Julian Watts 3 MF  IRL Wayne O'Sullivan 4 MF  AUS Noel Spencer 5 DF  AUS Alex Tobin 6 DF  AUS Vuko Tomasevic 8 MF  SCO Ian Ferguson 9 FW  AUS Adam Kwasnik 10 FW  AUS Dylan Macallister 11 MF  AUS Jonti Richter 12 MF  MLT John Hutchinson 14 MF  AUS Bradley Groves 16 FW  NZL Brent Fisher 18 DF  AUS Alex Wilkinson

No. Pos. Nation Player 19 MF  AUS Erik Paartalu 20 GK  AUS Stuart Page 22 MF  AUS Matthew Osman 23 MF  AUS Steven Baveas 24 MF  AUS Oliver Skelding 25 MF  AUS Omar Obeid 26 MF  AUS Andrew Mailer 28 MF  AUS Matthew Hunter 29 DF  AUS Michael Moulis 30 GK  AUS Jacob Rex 31 MF  BRA Caetano Lima 33 DF  AUS Mark Milligan — FW  AUS Paul Connell

No.	Position	Player	Transferred from	Type/fee	Date	Ref
3	DF	Wayne O'Sullivan	Parramatta Power		July 2003	[1]
23	MF	Steven Baveas	Ryde City			[1]
–	GK	Nathan Hughes	Sutherland Sharks			[1]
9	FW	Adam Kwasnik	Manly Warringah Dolphins		September 2003	[1]
22	MF	Matthew Osman	Manly Warringah Dolphins			[1]
25	MF	Omar Obeid	Manly Warringah Dolphins			[1]
30	GK	Jacob Rex	Manly Warringah Dolphins			[1]
31	MF	Caetano Lima	Ryde City		January 2004	[1]

Players with no appearances not included in the list.^[2][3]

No.	Pos.	Nat.	Name	National Soccer League		Total
				Apps	Goals	Apps	Goals
1	GK		Paul Henderson	23	0	23	0
2	DF		Julian Watts	15(1)	0	16	0
3	MF		Wayne O'Sullivan	24	2	24	2
4	MF		Noel Spencer	20	0	20	0
5	DF		Alex Tobin	4(2)	0	6	0
6	DF		Vuko Tomasevic	19(3)	1	22	1
8	MF		Ian Ferguson	18	2	18	2
9	FW		Adam Kwasnik	8(14)	4	22	4
10	FW		Dylan Macallister	13	4	13	4
11	MF		Jonti Richter	14(1)	5	15	5
12	MF		John Hutchinson	23	2	23	2
14	MF		Bradley Groves	7(1)	0	8	0
16	FW		Brent Fisher	4(8)	1	12	1
18	DF		Alex Wilkinson	15	0	15	0
19	MF		Erik Paartalu	0(1)	0	1	0
20	GK		Stuart Page	1(1)	0	2	0
22	MF		Matthew Osman	11(4)	1	15	1
23	MF		Steven Baveas	2(8)	0	10	0
25	MF		Omar Obeid	0(2)	0	2	0
26	MF		Andrew Mailer	0(6)	0	6	0
28	MF		Matthew Hunter	9(3)	0	12	0
29	DF		Michael Moulis	0(1)	0	1	0
31	MF		Caetano Lima	0(3)	0	3	0
33	DF		Mark Milligan	14	1	14	1

Rank	No.	Pos	Nat	Name	National Soccer League	Total
1	1	GK		Paul Henderson	8	8
Total					8	8