Mirrorball is a 1999 live album by Sarah McLachlan, compiled from performances during the Surfacing tour in 1997–98.

Most of the 14 songs are from McLachlan's two most recent albums at the time, Fumbling Towards Ecstasy and Surfacing.

It was a commercial success, entering top 3 on both Billboard 200 and Canadian Albums Chart.

Mirrorball: The Complete Concert is a two-disc expanded version of the album, collecting the same 14 songs and adding nine others.

These performances were recorded during the final two nights of McLachlan's Surfacing tour, at the Rose Garden Arena in Portland, Oregon on 20–21 April 1998.