Rainforth is an English-language surname, a variation of the toponymic surname Rainford from the village Rainford, Lancashire. Notable people with the surname include:
Elizabeth Rainforth (1814–1877), British opera singer and music arranger John Rainforth (born 1934), British bobsledder Janine Rainforth, British singer-songwriter
See also
Rainsford, variant spelling Ranford (surname), variant spelling James Renforth, (1842–1871), English Tyneside professional oarsman
References