Phú Thọ is a province located in northern Vietnam. The administrative center of the province is Việt Trì ward, which is situated approximately 80 kilometres (50 mi) from Hanoi and 50 kilometres (31 mi) from Nội Bài International Airport.
The province covers a total area of 9,631.38 km2 (3,718.70 mi2). As of 2025, the population of Phú Thọ was recorded at 4,022,638.