2004–05 Llanelli Scarlets season

Llanelli Scarlets
2004–05 season
ChairmanStuart Gallacher
Head coachGareth Jenkins
Celtic League5th
Celtic CupFinal
Heineken CupPool stage, 3rd
Highest home attendance8,266 vs Neath–Swansea Ospreys (7 May 2005)
Lowest home attendance4,129 vs Borders (17 December 2004)

The 2004–05 season was the second season in the history of the Llanelli Scarlets rugby union team. They competed in the Celtic League, in which they finished in fifth place, as well as the Celtic Cup and Heineken Cup. They reached the final of the Celtic Cup, losing 27–16 to Munster at Lansdowne Road in Dublin, but won just two matches in their Heineken Cup pool, finishing third behind Toulouse and Northampton Saints.