What is the name of Justin Bieber's world tour in support of the album "Purpose"?

Justin Bieber's world tour supporting the album Purpose was called the Purpose World Tour. It supported his fourth studio album, Purpose, which was released in 2015 and included major singles such as “What Do You Mean?”, “Sorry,” and “Love Yourself.”

The tour began in Seattle on March 9, 2016, and concluded in London on July 2, 2017. It traveled across North America, South America, Europe, Asia, Oceania, and Africa. The production combined live band performances, large video displays, dancers, and elaborate stage effects.

The tour is sometimes confused with Bieber's other concert tours. The Believe Tour supported the 2012 album Believe, while My World Tour supported his earlier releases. Changes Tour was an early name associated with the later tour for the Changes album, which was eventually reworked and presented as the Justice World Tour.