The Queen + Adam Lambert Tour 2014–2015 was a worldwide concert tour by British rock band Queen and American singer Adam Lambert during 2014 and 2015. Following on their 2012 tour and their appearance at the 2013 iHeart Radio Music Festival, the band announced a 2014 tour of North America. Following the overwhelming success of their North American tour, it was expanded to Australia, New Zealand and Asia in the autumn, then Europe in early 2015. A tour of South America took place in September 2015.

Queen + Adam Lambert is a collaboration between the remaining active members of the British band Queen and American vocalist Adam Lambert. As with all other Queen performances since 1997, longstanding bassist John Deacon has declined to participate in the project due to his retirement. This is the first long-term collaboration of Queen since the Queen + Paul Rodgers project ended in 2009. Like the previous project, it was made clear that Lambert would not be replacing Queen frontman Freddie Mercury, but rather that he would be featured with the band's active members.