The 2005 Lakeside World Professional Darts Championship was held from 1–9 January 2005 at the Lakeside Country Club in Frimley Green, Surrey. Raymond van Barneveld lifted the title for a fourth time, defeating England captain Martin Adams 6–2 in the final. The defending champion Andy Fordham suffered a first round loss to Vincent van der Voort. The women's event saw Trina Gulliver win her fifth successive title defeating Francis Hoenselaar 2–0 in a repeat the last year's final.