Ralph Docker (31 August 1855 — 7 July 1910) was an English cricketer who played first class cricket for Derbyshire in 1879.Docker was born in Harborne, Staffordshire, the son of Ralph Docker and his wife Sarah Sankey. His father was a solicitor in practice at Birmingham and Smethwick who took on a large number of public appointments. He was educated at King Edward's School, Birmingham.