Emeléus and Emeleus are related surnames. People with those names include:
Harry Julius Emeléus (1903-1993), British inorganic chemist, brother of Karl George Emeléus Henry Emeleus (1930-2017), British igneous petrologist, son of Karl George Emeléus Karl George Emeléus (1901–1989), experimental physicist, father of Henry, brother of Harry Julius