The 2018 BDO World Trophy was a major darts tournament run by the British Darts Organisation. It was host between 30 May and 3 June 2018 at Preston Guild Hall, Preston, England. Peter Machin and Aileen de Graaf were defending their champions, after beating Martin Phillips (10–8) and Anastasia Dobromyslova (6–2) respectively in the final of last year's edition. Machin lost to Michael Unterbuchner 7–1 in the Quarter-finals. De Graaf lost in the First round 4–3 to Maria O'Brien.