2003–04 Llanelli Scarlets season
| 2003–04 season | |||
| Chairman | Stuart Gallacher | ||
|---|---|---|---|
| Head coach | Gareth Jenkins | ||
| Celtic League | 1st | ||
| Celtic Cup | Quarter-finals | ||
| Heineken Cup | Quarter-finals | ||
| Highest home attendance | 10,800 vs Biarritz (9 April 2004) | ||
| Lowest home attendance | 2,460 vs Newport Gwent Dragons (20 September 2003) | ||
| |||
The 2003–04 season was the inaugural season in the history of the Llanelli Scarlets rugby union team. They competed in the Celtic League, which they won, as well as the Celtic Cup and Heineken Cup, reaching the quarter-finals of both competitions. They played their home matches at Stradey Park along with Llanelli RFC, who had played there since 1879.