Ruston & Hornsby was an industrial equipment manufacturer in Lincoln, England founded in 1918. The company is best known as a manufacturer of narrow and standard gauge diesel locomotives and also of steam shovels. Other products included cars, steam locomotives and a range of internal combustion engines, and later gas turbines. It is now a subsidiary of Siemens.

Lincoln is a cathedral city and district in Lincolnshire, England, of which it is the county town. In the 2021 Census, the Lincoln district had a population of 103,813. The 2021 census gave the urban area of Lincoln, including North Hykeham and Waddington, a recorded population of 127,540.