Donald "Dee" Margo (born February 4, 1952) is an American businessman who is the 54th mayor of El Paso, Texas.
On June 10, 2017, he became the mayor-elect of El Paso after winning the runoff part of the city's mayoral election of 2017 against another Republican businessman, David Saucedo.
Margo served a term in the Texas House of Representatives from 2011 to 2013, representing the 78th district, which covers parts of El Paso County, having defeated Texas state representative Joe Moody.
Moody defeated Margo in a rematch in 2012.Margo is running for re-election, against former mayor Oscar Leeser in 2020.