Named after the Royal Agricultural Society's showground, opened here in 1903.
The Prince of Wales, later George V, opened the 1903 show, and Brent's museum says the area was named Park Royal in his honour. Few visitors came, and the society gave up the site after three years. The station's 1903 predecessor, a little to the north, was Park Royal & Twyford Abbey; the present one was called Park Royal (Hanger Hill) from 1936 to 1947.