Marini may refer to any of the following:
- The Marinid or Mariní people (describing both ethnicity and the Marinid dynasty)
People having Marini as a surname:
- Biagio Marini (ca. 1587-1663), Italian composer of violin sonatas
- Enrico Marini (born 1969), Italian comic artist
- Franco Marini (born 1933), Italian politician
- Giacomo Marini (born 1951), Italian/American businessperson
- Giambattista Marini or Marino (1569-1625), Italian writer and poet
- Gilles Marini (born 1976), French actor
- Giovanna Marini (born 1937), Italian singer-songwriter
- Guido Marini (born 1965), Italian priest and current Master of Pontifical Liturgical Celebrations
- Lou Marini (born 1945), American saxophonist
- Luigi Marini (1885–1942), Italian lyric tenor
- Marino Marini (sculptor) (1901-1980), Italian sculptor
- Marino Marini (musician) (1924-1997), Italian popular musician
- Piero Marini (born 1942), Italian archbishop