Imaginary Day is the ninth studio album by the Pat Metheny Group.

The song "The Roots of Coincidence" won a Grammy Award for Best Rock Instrumental Performance; critic Richard Ginnell of AllMusic described the song as a dramatic departure for the group: "[an] out-and-out rock piece with thrash metal and techno-pop episodes joined by abrupt jump cuts."

Official DVD recorded live at the Mountain Winery, Saratoga, California, USA in July 1998, released in 2001.

This album marks the final appearance of longtime drummer Paul Wertico, who would leave in 2001 before the recording of Speaking of Now to work on other projects.

All tracks are written by Pat Metheny and Lyle Mays except where noted:* Sales figures based on certification alone.