Ralph Richardson (1848–1895) was a 19th-century Member of Parliament in Nelson, New Zealand.
Richardson was born in Capenhurst, Cheshire, England. He came to New Zealand on the Maori in 1851. He was the son of Dr Ralph Richardson and Marie Louise Richardson. His father was a Member of the Legislative Council from 1853 to 1856.
He represented the Suburbs of Nelson electorate from 1871. He resigned on 31 March 1873 "owing to urgent private affairs which require[d his] immediate departure for England".
Richardson lived in London for the later part of his life.