Lillie is both a surname and a given name. Notable people with the name include:
Surname:
Arthur Lillie (1831–1911), British soldier, Buddhist and author
Axel Lillie (1603–1662), Swedish soldier and politician
Beatrice Lillie (1894–1989), Canadian-born comic actress
Dennis Lillie (born 1945), Australian cricketer
Frank Rattray Lillie (1870–1947), American zoologist
Jim Lillie (1861–1890), American baseball player
Sir John Scott Lillie (1790-1867), Anglo-Irish Peninsular War veteran, inventor and father of Arthur
Joseph Christian Lillie (1760–1827), Danish architect
Leighton Lillie (born 1983), American motocross rider
Ludolph Henrich Lillie (Latin: Ludolphus Henricus Lillie; fl. 1750s), Danish printer
May Lillie (1869–1936), American Wild West entertainer
Mildred Lillie (1915–2002), American judge
Given name:
Lillie P. Bliss (1864–1931), American art collector and historian
Lillie Burke (died 1949), American educator
Lillie Hayward (1891–1977), American actress
Lillie Langtry, 18th-19th century British actress
Lillie Leatherwood (born 1964), American sprinter
Lillie McCloud (born 1958), American singer