The Joanne World Tour was the sixth headlining concert tour by American singer Lady Gaga, in support of her fifth studio album, Joanne (2016). It began on August 1, 2017, in Vancouver, Canada and ended on February 1, 2018, in Birmingham, England. After tickets went on sale, various shows in Europe and North America quickly sold out, prompting additional dates in both continents.

A concert tour is a series of concerts by an artist or group of artists in different cities, countries or locations. Often, concert tours are named to differentiate different tours by the same artist and to associate a specific tour with a particular album or product. Especially in the popular music world, such tours can become large-scale enterprises that last for several months or even years, are seen by hundreds of thousands or millions of people, and bring in millions of dollars in ticket revenues. A performer who embarks on a concert tour is called a touring artist.