Triathlon at the 2015 Island Games was held on 28 June at Les Jardins de la Mer, Jersey.[1]
* Host nation (Gibraltar)
| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 |  Jersey* | 3 | 1 | 2 | 6 |
| 2 |  Faroe Islands | 1 | 0 | 0 | 1 |
| 3 |  Guernsey | 0 | 2 | 0 | 2 |
| 4 |  Isle of Man | 0 | 1 | 0 | 1 |
| 5 |  Gibraltar | 0 | 0 | 1 | 1 |
 Shetland | 0 | 0 | 1 | 1 | |
| Totals (6 entries) | 4 | 4 | 4 | 12 | |
| Event | Gold | Silver | Bronze | |||
|---|---|---|---|---|---|---|
| Men's | Daniel Halksworth (JEY) |
1:57:09.84 | James Travers (GGY) |
2:02:22.49 | Tom Perchard (JEY) |
2:04:43.69 |
| Men's Team | Jersey Michael Charlton Daniel Halksworth Demri Mitchell Tom Perchard Nathan Woodland |
6:09:05 | Guernsey Ben Creasey Matthew Dorian James Gower Bob Guilbert Sean Murphy Alan Rowe Max Thornton James Travers |
6:18:32 | Gibraltar Mark Chichon Andrew Gordon Edgar Harper Keith Laguea Robert Matto Tobie Muir Sean Randall Christopher Redondo Akhill Viz Christopher Walker |
6:23:55 |
| Women's | Kariana Ottosen (FRO) |
2:16:48.10 | Joanne Gorrod (JEY) |
2:19:34.60 | Samantha Lee (JEY) |
2:19:47.95 |
| Women's Team | Jersey Joanne Gorrod Samantha Lee Arlene Lewis Jennifer O'Brien Della Roderick Philippa Worth |
4:39:23 | Isle of Man Lynsey Elliott Hannah Howitt Karen Shimmin |
4:52:51 | Shetland Sanna Aitken Wendy Hatrick Lynsey Henderson Frances Hutchison Louise Parr |
4:57:42 |