Namesakes
Eurovision Song Contest Winners:
2 winners
Lys Assia (a.k.a. Rosa) 1956 Switzerland 
Salomé (a.k.a. Rosa) 1969 Spain
Fictional Characters from Television:
1 character
Rosa Diaz 2013 Brooklyn Nine-Nine
Notable Activists and Revolutionaries:
2 activists
(activist) Rosa Luxemburg 1871-1919
(activist) Rosa Parks 1913-2005
Notable Actors and Entertainers:
5 actors
Linda Christian (a.k.a. Rosa) 1923-2011
Rosie Perez 1964-
Rosa Blasi 1972-
Rose McGowan (a.k.a. Rósa) 1973-
Rosa Salazar 1985-
Notable Artists:
1 sculptor/painter
Rosa Bonheur 1822-1899
Notable Musicians:
3 singers
Lys Assia (a.k.a. Rosa) 1924-2018
Connie Francis (a.k.a. Rosa) 1937-
Salomé (a.k.a. Rosa) 1939-
Notable Writers:
1 author
Anaïs Nin (a.k.a. Rosa) 1903-1977
Olympic Medalists:
1 bronze, 1 bronze/gold
(bronze) Rosa Kellner 1928 4x100 m relay
(bronze/gold) Rosa Mota 1984; 1988 marathon
Saints:
4 saints, 3 blessed
Saint Rosa of Viterbo 1234-1251
Saint Rosa of Lima 1586-1617
Saint Rosa Venerini 1656-1728
Saint María Rosa Molas y Vallve 1815-1876
Blessed Anna Rosa Gattorno 1831-1900
Blessed Maria Anna Rosa Caiani 1863-1921
Blessed Leonella Sgorbati (a.k.a. Rosa) 1940-2006
Tolkien's Characters:
1 character
Rosa Baggins (f)