Ramco is a town in the Riverland region of South Australia north-east of the state capital, Adelaide and west of Waikerie. At the , Ramco had a population of 166. It is on the south (left) bank of the Murray River downstream from Waikerie.
Ramco has a post office, a Lutheran church, a town hall and a school, Ramco Primary School. The current town was surveyed in 1940 however there was an earlier village settlement by the same name in the same area, settled in 1894.
The name Ramco is derived from an Aboriginal word "Bogorampko", a mythical tribe supposed to be superior to all natives. The locality includes the Ramco Lagoon adjacent to the river, but the adjoining Ramco Point Conservation Park is in the adjacent locality of Sunlands.
Ramco is located within the federal division of Barker, the state electoral district of Chaffey and the local government area of the District Council of Loxton Waikerie.