Jonas Roup McClintock (January 8, 1808 – November 25, 1879) was an American physician and Democratic politician from Pennsylvania who served as the 8th Mayor of Pittsburgh from 1836 to 1839.
He rose to local prominence due to his efforts in treating Pittsburgh residents during the cholera epidemics in the early 1830s.
The "cut" allowed for settlement of an area of the city previously uninhabitable because of the grade of the land.
The city also expanded during his time as mayor with the annexation of the Northern Liberties Borough.
As a state senator, he sponsored legislation which established free secondary education in Pennsylvania.