Grădiștea is a commune in the northeastern part of Ilfov County, Muntenia, Romania.

[2] The commune is situated in the Wallachian Plain, at an altitude of 84 m (276 ft), in what was once the old-growth forest known as Codrii Vlăsiei.

[2] It lies on the banks of the river Vlăsia, which discharges into the Cociovaliștea in Lake Căldărușani [ro].

It borders Nuci to the north, Moara Vlăsiei and Dascălu to the west, Petrăchioaia to the south, and the town of Fierbinți-Târg to the east.

[2] The Greci halt serves the CFR Main Line 700, which connects Bucharest to Urziceni and continues northeast towards the border with Moldova.