Mellersh is a surname. Notable people with the surname include:
Francis Mellersh (cricketer) (1786–1849), English amateur cricketer Francis Mellersh (RAF officer), KBE, AFC (1898–1955), Royal Naval Air Service aviator, flying ace, senior commander in the Royal Air Force H. E. L. Mellersh (1897–1980), British author, primarily of text books
See also Meller