Sibella is a female given name. Notable persons with that name include:
Sibella Annie Barrington (1867–1929), Canadian nurse
Sibella Cottle, mistress to Irishman Sir Henry Lynch-Blosse, 7th Baronet (1749–1788)
Sibella Macarthur-Onslow (1871–1943), Australian charity worker
Sibella Elizabeth Miles (1800–1882), English poet
Sibella Ross (1840–1929), New Zealand schoolteacher and businesswoman
Fictional characters
Sibella Dracula, the daughter of Dracula in the 1988 animated film Scooby-Doo and the Ghoul School
Sibella Hallward, a character in the 1949 film Kind Hearts and Coronets