Lilias is a feminine given name. Notable people with the name include:
Lilias Craven, fictional character in the children's novel The Secret Garden (1911)
Lilias Folan (20th century), television show host
Lilias Mary Gower (1877-1959), Welsh croquet player
Lilias Massey, Chatelaine of Rideau Hall
Lilias Torrance Newton (1896-1980), Canadian painter
Lilias Trotter (1853-1928), Christian missionary in Algeria
Lillias Hamilton (1858-1925), British doctor
Lilias Rider Haggard (1892-1968), English writer
Lillias Rumsey Sanford (1850-1940), founder of Rumsey Hall School
Lillias Margaret Skene (1867-1957), Australian feminist
Lillias White, American actress
