Clarissa may refer to:
Clarissa (given name), a female given name
Clarissa; or, The History of a Young Lady, a novel by Samuel Richardson
Clarissa (film), a 1941 German film
Clarissa (TV series), a British television drama series based on Richardson's novel
Clarissa, Minnesota, a small city in the United States
302 Clarissa, an asteroid
Clarissa, an opera based on the Richardson novel by Robin Holloway
Clarissa, an unfinished novel by Stefan Zweig
Clarissa, a genus of sawflies in the family Pergidae
