The province of Pisa is a province in the Tuscany region of Italy. Its capital is the city of Pisa. With an area of 2,448 square kilometres (945 sq mi) and a total population of 421,642, it is the second most populous and fifth largest province of Tuscany. It is subdivided into 37 comuni.

Tuscany is a region in central Italy with an area of about 23,000 square kilometres and a population of about 3.8 million inhabitants. The regional capital is Florence (Firenze).