| Event: | Swimming |
| Games: | 2011 Pacific Games |
| Location: | Nouméa, New Caledonia |
| Dates: | 29 August – 5 September 2011 |
| Previous: | 2007 |
| Next: | 2015 |
Swimming at the 2011 Pacific Games in Nouméa was dominated by the host team New Caledonia who won thirty-three of the forty events contested. The events in the pool – nineteen each for men and women – were held between 29 August and 2 September at the Verlaguet Aquatic Center. The men's and women's open water events were held on Monday 5 September in the waters off Ouvéa Naval Base. All pool events were swum in a long-course (50 metre) pool and the open water events were 5 kilometres in length.
Note: Below are the events by days. Event order presumably was alternate women / men.
| Date | Mon. Aug. 29 | Tue. Aug. 30 | Wed. Aug. 31 | Thu. Sep. 1 | Fri. Sep. 2 |
| E v e n t s | 100 fly (M) 200 breast (M) 200 free (M) 4x100 free relay (M) 200 back (W) 50 fly (W) 800 free (W) | 100 breast (M) 400 free (M) 50 back (M) 100 breast (W) 200 free (W) 200 IM (W) 4x200 free relay (W) | 100 free (M) 200 fly (M) 200 IM (M) 4x200 free relay (M) 100 fly (W) 200 breast (W) 400 free (W) 50 back (W) | 100 back (M) 1500 free (M) 50 breast (M) 50 fly (M) 100 back (W) 200 fly (W) 4x100 free relay (W) 50 free (W) | 200 back (M) 400 IM (M) 4x100 medley relay (M) 50 free (M) 100 free (W) 400 IM (W) 4x100 medley relay (W) 50 breast (W) |
Monday, September 5: Men's and Women's 5K Open Water swim.
New Caledonia's Lara Grangeon entered all twenty women's events and won a medal in all of them, including sixteen golds. Host country New Caledonia won the gold medal in all women's events.
| 50m Freestyle | 23.45 | 23.51 | 23.56 | |||
| 100m Freestyle | 51.53 | 51.61 | 51.62 | |||
| 200m Freestyle | 1:52.40 | 1:53.09 | 1:55.86 | |||
| 400m Freestyle | 4:05.67 | 4:05.91 | 4:08.19 NR | |||
| 1500m Freestyle | 16:09.22 | 16:51.28 | 16:57.17 | |||
| 50m Backstroke | 26.05 | 27.16 | 27.72 | |||
| 100m Backstroke | 56.54 | 58.50 | 59.36 | |||
| 200m Backstroke | 2:08.61 | 2:08.69 | 2:22.87 | |||
| 50m Breaststroke | 28.55 NR | 29.33 | 29.66 | |||
| 100m Breaststroke | 1:04.81 NR | 1:04.88 | 1:05.40 | |||
| 200m Breaststroke | 2:17.06 | 2:24.45 | 2:24.74 | |||
| 50m Butterfly | 24.39 | 25.34 | 25.45 | |||
| 100m Butterfly | 53.93 | 56.55 | 57.18 | |||
| 200m Butterfly | 2:03.97 | 2:08.13 | 2:09.96 | |||
| 200m I.M. | 2:07.15 | 2:09.89 | 2:24.25 | |||
| 400m I.M | 4:38.25 | 4:43.04 | 4:53.66 | |||
| 4x100m Freestyle relay | 3:27.81 | 3:37.50 | 3:41.16 NR | |||
| 4x200m Freestyle relay | 7:54.64 | 8:14.08 | 8:29.86 NR | |||
| 4x100m Medley relay | 3:53.53 | 4:05.60 | 4:07.63 | |||
| 5K Open Water (time= h:min:s) | 1:00:35 | 1:02:31 | 1:02:32 | |||
| 50m Freestyle | 26.77 | 26.93 | 27.24 | |||
| 100m Freestyle | 58.65 | 58.71 | 59.80 | |||
| 200m Freestyle | 2:08.47 | 2:10.48 | 2:12.27 | |||
| 400m Freestyle | 4:30.33 | 4:39.79 | 4:51.08 | |||
| 800m Freestyle | 9:05.84 | 9:40.16 | 10:15.16 | |||
| 50m Backstroke | 31.01 | 31.08 | 31.53 | |||
| 100m Backstroke | 1:06.68 | 1:09.01 | 1:10.30 | |||
| 200m Backstroke | 2:20.78 | 2:27.94 | 2:33.28 | |||
| 50m Breaststroke | 34.30 | 34.40 | 35.19 | |||
| 100m Breaststroke | 1:13.07 | 1:14.51 | 1:17.16 | |||
| 200m Breaststroke | 2:36.57 | 2:43.24 | 2:53.63 | |||
| 50m Butterfly | 27.13 | 28.68 | 30.64 | |||
| 100m Butterfly | 1:00.47 | 1:05.18 | 1:07.37 | |||
| 200m Butterfly | 2:17.84 | 2:28.59 | 2:32.48 | |||
| 200m I.M. | 2:22.19 | 2:34.25 | 2:35.87 | |||
| 400m I.M | 5:01.68 | 5:24.49 | 6:02.84 | |||
| 4x100m Freestyle relay | 4:01.95 | 4:11.80 | 4:13.64 | |||
| 4x200m Freestyle relay | 8:52.11 | 9:20.87 | 9:44.28 | |||
| 4x100m Medley relay | 4:25.51 | 4:41.45 NR | 4:48.34 | |||
| 5K Open Water (time= h:min:s) | 1:02:38 | 1:05:31 | 1:14:13 | |||
88 swimmers from 11 countries were entered in the swimming events at the 2011 Games. The teams entered in swimming were:
American Samoa (1)
Fiji (11)
Guam (9)
Marshall Islands (3)
Micronesia (3)
New Caledonia (36)
Palau (6)
Papua New Guinea (12)
Tokelau (1)
Tonga (3)