Namesakes
Fictional Characters from Song Titles:
4 characters
(character) Cecilia 1970 Cecilia 
(character) Cecilia 2006 Oh, Cecilia
(character) Cecilia 2014 Oh Cecilia (Breaking My Heart)
(character) Cecilia 2014 Cecilia and the Satellite
Fictional Characters from Television:
2 characters
Cecilia Smith 1996 7th Heaven
Cecilia Wiznarski 1999 Time of Your Life
Notable Actors and Entertainers:
2 actors
Marion Davies (a.k.a. Cecilia) 1897-1961
Sally Hawkins (a.k.a. Cecilia) 1976-
Notable Musicians:
2 singers
Maria Callas (a.k.a. Cecilia) 1923-1977
Samantha Mumba (a.k.a. Cecilia) 1983-
Notable Scientists and Inventors:
1 astronomer
Cecilia Payne-Gaposchkin 1900-1979
Saints:
4 saints, 1 blessed
Saint Cecilia ?-117
Saint Cecilia ?-230
Saint Cecilia ?-1290
Saint Cecilia Ryou So-Sa 1760-1839
Blessed Zdenka Cecília Schelingová 1916-1955