Aquatics at the 1990 Commonwealth Games consisted of diving, swimming and synchronized swimming. They were held in Henderson, New Zealand.

  *   Host nation (New Zealand)

Rank	Nation	Gold	Silver	Bronze	Total
1	Australia	3	1	2	6
2	Canada	2	4	3	9
3	Wales	1	0	0	1
4	Zimbabwe	0	1	0	1
5	New Zealand*	0	0	1	1
Totals (5 entries)		6	6	6	18

Event	Gold		Silver		Bronze
1 m springboard	Russell Butler  Australia	583.65	David Bédard  Canada	547.35	Simon McCormack  Australia	546.87[1]
3 m springboard	Craig Rogerson  Australia	594.84	Mark Rourke  Canada	569.97	Larry Flewwelling  Canada	569.79[2]
10 m platform	Bob Morgan  Wales	639.84	David Bédard  Canada	555.54	Bruno-Michel Fournier  Canada	544.50[3]

Event	Gold		Silver		Bronze
1 m springboard	Mary DePiero  Canada	443.28	Tracy Cox  Zimbabwe	423.93	Peta Taylor  Australia	418.71[1]
3 m springboard	Jenny Donnet  Australia	491.79	Barbara Bush  Canada	458.43	Nicky Cooney  New Zealand	457.29[3]
10 m platform	Anna Dacyshyn  Canada	391.68	April Adams  Australia	380.49	Paige Gordon  Canada	380.43[2]

  *   Host nation (New Zealand)

Rank	Nation	Gold	Silver	Bronze	Total
1	Australia	21	19	13	53
2	Canada	8	5	9	22
3	New Zealand*	2	2	3	7
4	England	1	6	7	14
Totals (4 entries)		32	32	32	96

Event	Gold		Silver		Bronze
50 m freestyle	Andrew Baildon  Australia	22.76 GR	Angus Waddell  Australia	23.03	Mark Foster  England	23.16
100 m freestyle	Andrew Baildon  Australia	49.80 CWR	Chris Fydler  Australia	50.49	Mike Fibbens  England	50.76
200 m freestyle	Martin Roberts  Australia	1:49.58 GR	Ian Brown  Australia	1:49.60	Thomas Stachewicz  Australia	1:49.98
400 m freestyle	Ian Brown  Australia	3:49.91 GR	Glen Housman  Australia	3:53.90	Christopher Bowie  Canada	3:54.04
1500 m freestyle	Glen Housman  Australia	14:55.25 GR	Kieren Perkins  Australia	14:58.08	Mike McKenzie  Australia	15:09.25
100 m backstroke	Mark Tewksbury  Canada	56.07	Gary Anderson  Canada	56.84	Paul Kingsman  New Zealand	57.07
200 m backstroke	Gary Anderson  Canada	2:01.69	Paul Kingsman  New Zealand	2:01.86	Kevin Draxinger  Canada	2:02.02
100 m breaststroke	Adrian Moorhouse  England	1:01.49	James Parrack  England	1:03.15	Nick Gillingham  England	1:03.16
200 m breaststroke	Jonathan Cleveland  Canada	2:14.96	Rodney Lawson  Australia	2:15.68	Nick Gillingham  England	2:16.02
100 m butterfly	Andrew Baildon  Australia	53.98	Marcel Gery  Canada	54.42	Jason Cooper  Australia	54.47
200 m butterfly	Anthony Mosse  New Zealand	1:57.33	Martin Roberts  Australia	1:59.95	Jon Kelly  Canada	2:00.37
200 m individual medley	Gary Anderson  Canada	2:02.94	Robert Bruce  Australia	2:03.78	Martin Roberts  Australia	2:04.03
400 m individual medley	Robert Bruce  Australia	4:20.26	Rob Woodhouse  Australia	4:21.79	Jon Kelly  Canada	4:23.96
4 × 100 m freestyle relay	Australia Andrew Baildon Chris Fydler Ian Vander-Wal Jason Cooper Matthew Renshaw Thomas Stachewicz	3:20.05	England Austyn Shortman Mark Foster Mike Fibbens Neil Metcalfe Steve Dronsfield	3:22.61	Canada Blair Hicken Darren Ward Marcel Gery Stephane Herbert Stephen Vandermeulen	3:22.79
4 × 200 m freestyle relay	Australia Gary Lord Ian Brown Martin Roberts Thomas Stachewicz	7:21.17	Canada Edward Parenti Gary Vandermeulen Jon Kelly Turlough O'Hare	7:25.53	New Zealand Anthony Mosse John Steel Richard Tapper Ross Anderson	7:30.10
4 × 100 m medley relay	Canada Jon Cleveland Marcel Gery Mark Tewksbury Tom Ponting	3:42.45	England Adrian Moorhouse Austyn Shortman Gary Binfield Mike Fibbens	3:43.88	Australia Andrew Baildon Chris Fydler Phil Rogers Thomas Stachewicz	3:43.91

Event	Gold		Silver		Bronze
50 m freestyle	Lisa Curry-Kenny  Australia	25.80 CWR	Karen van Wirdum  Australia	26.00	Andrea Nugent  Canada	26.26
100 m freestyle	Karen van Wirdum  Australia	56.48 CWR	Lisa Curry-Kenny  Australia	56.61	Trish Noall  Canada	56.67
200 m freestyle	Hayley Lewis  Australia	2:00.79	Jennifer McMahon  Australia	2:02.43	Trish Noall  Canada	2:02.66
400 m freestyle	Hayley Lewis  Australia	4:08.89	Julie McDonald  Australia	4:09.72	Janelle Elford  Australia	4:10.74
800 m freestyle	Julie McDonald  Australia	8:30.27	Janelle Elford  Australia	8:30.47	Sheridan Burge-Lopez  Australia	8:36.78
100 m backstroke	Nicole Livingstone  Australia	1:02.46	Anna Simcic  New Zealand	1:02.55	Johanna Griggs  Australia	1:03.69
200 m backstroke	Anna Simcic  New Zealand	2:12.32	Nicole Livingstone  Australia	2:12.62	Karen Lord  Australia	2:14.53
100 m breaststroke	Keltie Duggan  Canada	1:10.74	Guylaine Cloutier  Canada	1:11.22	Suki Brownsdon  England	1:11.54
200 m breaststroke	Nathalie Giguère  Canada	2:32.16	Guylaine Cloutier  Canada	2:32.91	Helen Morris  Australia	2:33.57
100 m butterfly	Lisa Curry-Kenny  Australia	1:00.66	Susie O'Neill  Australia	1:01.03	Madeleine Scarborough  England	1:01.33
200 m butterfly	Hayley Lewis  Australia	2:11.15	Helen Morris  Australia	2:11.76	Nicole Redford  Australia	2:13.53
200 m individual medley	Nancy Sweetnam  Canada	2:15.61	Jodie Clatworthy  Australia	2:17.10	Hayley Lewis  Australia	2:17.13
400 m individual medley	Hayley Lewis  Australia	4:42.65	Jodie Clatworthy  Australia	4:45.76	Donna Procter  Australia	4:47.38
4 × 100 m freestyle relay	Australia Angela Mullens Karen van Wirdum Lisa Curry-Kenny Susan O'Neill	3:46.85	Canada Allison Higson Erin Murphy Kimberley Paton Patricia Noall	3:48.69	England June Croft Karen Pickering Sharron Davies Zara Long	3:51.26
4 × 200 m freestyle relay	Australia Hayley Lewis Janelle Elford Jennifer McMahon Julie McDonald	8:08.95	England Joanna Coull Judy Lancaster June Croft Sharron Davies	8:16.31	New Zealand Linda Robinson Michelle Burke Phillippa Langrell Sharon Hanley	8:22.60
4 × 100 m medley relay	Australia Karen van Wirdum Lara Hooiveld Lisa Curry-Kenny Nicole Livingstone	4:10.87	England Joanne Deakins Karen Pickering Madeleine Scarborough Suki Brownsdon	4:11.88	Canada Keltie Duggan Lori Melien Nancy Sweetnam Patricia Noall	4:12.20

  *   Host nation (New Zealand)

Rank	Nation	Gold	Silver	Bronze	Total
1	Canada	3	1	1	5
2	England	0	2	0	2
3	Australia	0	0	2	2
Totals (3 entries)		3	3	3	9

Event	Gold		Silver		Bronze
Solo	Sylvie Fréchette  Canada	196.68	Kerry Shacklock  England	184.79	Semon Elke Rohloff  Australia	173.320
Duet	Canada Kathy Glen Christine Larsen	191.23	England Sarah Northey Kerry Shacklock	185.435	Australia Lisa Barbara Lieschke Semon Elke Rohloff	175.765
Figures	Sylvie Fréchette  Canada	99.16	Kathy Glen  Canada	94.74	Christine Larsen  Canada	94.52