The 2005 BMW Championship was the 51st edition of the BMW Championship, an annual professional golf tournament on the European Tour. It was held 26–29 May at the West Course of Wentworth Club in Virginia Water, Surrey, England, a suburb southwest of London. It was the first year the event's sponsorship had been taken on by BMW, after Volvo's contract to sponsor the event had expired. Ángel Cabrera won by two strokes ahead of Paul McGinley, having had two previous runner-up finishes in the event.