Prosciutto crudo, in English often shortened to prosciutto ( prə-SHOO-toh, proh-, Italian: [proʃˈʃutto]), is Italian uncooked, unsmoked, and dry-cured ham. Prosciutto crudo is usually served thinly sliced.

Several regions in Italy have their own variations of prosciutto crudo, each with degrees of protected status, but the most prized are Prosciutto di Parma DOP from Emilia-Romagna and Prosciutto di San Daniele DOP from Friuli Venezia Giulia. Unlike speck (Speck Alto Adige PGI) from the South Tyrol region, prosciutto is not smoked. There is also a tradition of making prosciutto in southern Switzerland.

In Italian, prosciutto means any kind of ham, either dry-cured (prosciutto crudo or simply crudo) or cooked (prosciutto cotto), but in English-speaking countries, it usually means either Italian prosciutto crudo or similar hams made elsewhere. However, the word "prosciutto" itself is not protected; cooked ham may legally be, and in practice is, sold as prosciutto (usually as prosciutto cotto, and from Italy or made in the Italian style) in English-speaking regions.