An aerial and land search is under way for a Queensland man who has gone missing after attending an Easter music festival near the Queensland-New South Wales border.

Queensland police say Bradley Smith, 37, was reported missing last night after failing to return home to Nanango from the Rabbits Eat Lettuce festival in Elbow Valley, south of Warwick.

Smith is about 175cm tall with a solid build, fair complexion, dark brown hair and blue eyes.

Anyone with information regarding his whereabouts is urged to contact police.

The festival has also been marred by the possible drug overdose deaths of a 24-year-old Maleny man and a 22-year-old Nambour woman.