Robert Strettell (1693–1762) was a city councilman and mayor of Philadelphia.
He was born in Dublin, Ireland, in 1693, the son of Amos Strettell and moved to London shortly thereafter.
He was a member of the Common Council of the City of Philadelphia, a member of the Governor's Council, and Mayor of Philadelphia.
Strettell was a trustee of the Academy and College of Philadelphia (now the University of Pennsylvania) from 1749 to 1762.
The London commission merchant John Strettell was his son.