The Fundamental Tour (also known as Fundamental Live) was a concert tour by English electronic duo Pet Shop Boys.

The tour supported the group's ninth studio album, Fundamental.

Beginning in June 2006, the trek played over 100 dates in Europe, the Americas, Australia and Asia.

It is not representative of all concerts performed in North America.

The show was filmed at the Auditorio Nacional in Mexico on 14 November 2006, and was released on DVD format as Cubism in 2007.