The 2012 Lakeside World Professional Darts Championship was the 35th BDO World Darts Championship organised by the British Darts Organisation, and the 27th staging at the Lakeside Country Club at Frimley Green. It ran from 7–15 January. Martin Adams was the defending men's champion, having won the title for the third time in the previous year's final against Dean Winstanley. The defending women's champion was Trina Gulliver, who won her ninth title in the 2011 final against Rhian Edwards. Players from five countries including a record number of eight Dutch players took part in the tournament.