Neapolitan may refer to:

• Neapolitan--of, or pertaining to the city of Naples, Italy and sometimes its wider Duchy or Province of Naples

• Previously a nationality, during the time of the Kingdom of Naples or the Neapolitan Republics

• Neapolitan language, a language of Naples and environs in southern Italy
• Neapolitan ice cream, a mixture of chocolate, vanilla, and strawberry ice cream side-by-side in the same container
• Neapolitan chord, in music, is the first inversion of a major chord built on the lowered second (supertonic) scale degree
• Neapolitan Mastiff, a large, ancient breed of dog
• Neapolitan piastra, a currency of the mainland part of the former Kingdom of the Two Sicilies
• Neapolitan sauce, a basic tomato-based sauce derived from Italian cuisine
• Neapolitan Pizza, a variety of pizza made according to strict rules
• Neapolitan War
• Neapolitan Republic
• Naporitan, the name of a pasta dish, which is popular in Japan

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