Mir Zia Mahmood (born 7 January 1946) is a Pakistani-American professional bridge player.

He qualified as a Chartered Accountant of the Institute of England and Wales and spent three years running a family business in Pakistan.

The event is transnational, but none of the nine winning teams has included a single player from outside Europe and the United States.

For many years his regular partner was Masood Salim (deceased), followed by Michael Rosenberg, and now Bob Hamman—as members of Nick Nickell's professional team through spring 2012.

To prove his point, Zia and his American teammates once played their opening match in Pakistani dress.

[6] Mahmood spends much of his time in Great Britain and the United States and is very much part of the London bridge scene.

He wrote a weekly column for The Guardian newspaper until January 2012, when the paper stopped covering bridge.