A Duo Occasion is live performance video with Harry Connick Jr. on piano and Branford Marsalis on saxophone(s), released on DVD in November 2005.

It was recorded at the Library and Archives Canada as part of the 25th anniversary of the Ottawa Jazz Festival on June 24, 2005.

The performance contains music from the album Occasion : Connick on Piano, Volume 2, except "Chattanooga Choo Choo" and "Light the Way".