From Latin 'marinus' meaning of the sea; also linked to Saint Marinus, founder of San Marino.
Marino derives from the Latin marinus, meaning 'of the sea' — a name that carries the entire Mediterranean world in its etymology, the salt, the trade routes, the mythologies of sailors and fisher-saints. It entered Christian usage through Saint Marinus, a 3rd-century stonemason from the Dalmatian island of Rab who, according to tradition, fled religious persecution and founded a small hermit community on Mount Titano in central Italy. That community became the Republic of San Marino, the world's oldest surviving republic and one of the smallest sovereign states — a nation that literally bears this name, making Marino unique among names in having an entire country as its monument.
Saint Marinus is still venerated as the patron saint of San Marino, and his feast day on September 3 coincides with the republic's national day. Throughout Italy, Croatia, and other Adriatic cultures, Marino remained in steady use as a name that honored both the saint and the sea itself. The 13th-century Venetian chronicler Marino Sanudo the Elder produced important geographic texts about the eastern Mediterranean, and the name recurs across Italian history in merchants, navigators, and churchmen — fitting for a civilization built on maritime commerce.
In the 20th century, Marino Marini, the Italian sculptor, gave the name an association with modernist vigor — his mounted warrior sculptures became icons of post-war Italian art. The name today carries an understated elegance particularly prized by families with Italian or Adriatic heritage, and it has found quiet admirers in wider circles who value its grounded, elemental meaning and its beautiful geographic legacy.