| Event: | Rugby union |
| Games: | 1963 South Pacific Games |
| Venue: | National Stadium, Suva |
| Dates: | 30 August - 7 September |
| Nations: | 3 |
| Next: | 1966 |
Rugby union at the 1963 South Pacific Games was played as a double round-robin with 3 men's teams competing. No finals were played and a complete set of gold, silver and bronze medals were awarded to the teams as per their finishing positions. Fiji was unbeaten in the tournament and were presented with their gold medals by the Governor of Fiji.
| Men's rugby 15s | align=center | align=center | align=center |
Final standings after the round robin tournament:
| width=200 | Team | width=20 | Pld | width=20 | W | width=20 | D | width=20 | L | width=30 | PF | width=30 | PA | width=30 | PD | width=20 | Pts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| align=left | 4 | 4 | 0 | 0 | 104 | 23 | +81 | 8 | |||||||||
| align=left | 4 | 2 | 0 | 2 | 59 | 44 | +15 | 4 | |||||||||
| align=left | 4 | 0 | 0 | 4 | 20 | 116 | -96 | 0 |
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