The Steamtown Peterborough Railway Preservation Society Inc. (known colloquially as Steamtown and Steamtown Peterborough) was a not-for-profit incorporated society that operated a heritage steam railway from Peterborough, South Australia, north along a section of the Peterborough to Quorn railway line, between 1977 and 2002. The society based its operations on the former South Australian Railways roundhouse at Peterborough and purpose-built sheds and yard at Peterborough West.