| Competition: | Welsh Premier League |
| Season: | 2004–05 |
| Winners: | Total Network Solutions |
| Relegated: | Afan Lido |
| Continentalcup1: | Champions League |
| Continentalcup1 Qualifiers: | Total Network Solutions |
| Continentalcup2: | UEFA Cup |
| Continentalcup2 Qualifiers: | Rhyl Carmarthen Town |
| Continentalcup3: | Intertoto Cup |
| Continentalcup3 Qualifiers: | Bangor City |
| League Topscorer: | Marc Lloyd Williams (31) |
| Matches: | 306 |
| Total Goals: | 892 |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
The 2004–05 Welsh Premier League was the 13th season of the Welsh Premier League since its establishment as the League of Wales in 1992. It began on 14 August 2004 and ended on 29 April 2005.[1] The league was won by Total Network Solutions, their second title.