Vachell is a surname. Notable people with the surname include:
Ada Vachell (1866–1923), English disabilities advocate Arthur H. Vachell (1864–1933), English watercolorist Charles Vachell, (c. 1783–1859), Welsh businessman and local politician Eleanor Vachell (1879–1948), Welsh botanist Horace Annesley Vachell (1861–1955), English writer Oliver Vachell, (c. 1518–1564), English politician Thomas Vachell (disambiguation) Tanfield Vachell (1602–1658), English member of parliament