Smithfield is a northern suburb of Adelaide, in the state of South Australia, Australia. Smithfield is located approximately 30 kilometres from the Adelaide CBD and is located in the City of Playford.

 Smithfield is bounded by Munno Para West in the north, Main North Road in the east, Elizabeth North in the south, Smithfield Plains in the west.


Smithfield is named after John Smith, an early landowner in the area. Settlement of the area dates from 1847, with land used mainly for farming and wheat and hay growing. The township was established in the 1850s, with growth spurred by the opening of the railway line in 1857. Originally named Gawler Plains but was renamed Smithfield in 1855.


Munno Para Shopping City is located on main north road. It contains supermarkets Foodland, Coles & Aldi, Retailers Kmart, Harvey Norman, Spotlight and many other specialty stores. Smithfield Reserve with football/cricket ground & playground.


Adelaide/Gawler train line runs directly pass Smithfield and accessible at the Smithfield train station/bus interchange. Buses run regularly through the area which is located close to main north road & northern express way through to Adelaide CBD.