Bartolomeo Sacchi (Italian: [ˌbartɔlɔˈmɛɔ ˈsakki]; 1421 – 21 September 1481), known as Platina (in Italian il Platina [il ˈplatina]) after his birthplace (Piadena), and commonly referred to in English as Bartolomeo Platina, was an Italian Renaissance humanist writer and gastronomist.
Platina started his career as a soldier employed by condottieri, before gaining long-term patronage from the Gonzagas, including the young cardinal Francesco, for whom he wrote a family history. He studied under the Byzantine humanist philosopher John Argyropulos in Florence, where he frequented other fellow humanists, as well as members of the ruling Medici family.
Around 1462 he moved with Francesco Gonzaga to Rome, where he purchased a post as a papal writer under the humanist Pius II (Enea Silvio Piccolomini) and became a member of the pagan-influenced Roman Academy founded by Pomponio Leto. Close acquaintance with the renowned chef Maestro Martino in Rome seems to have provided inspiration for a theoretical treatise on Italian gastronomy entitled De honesta voluptate et valetudine ("On honourable pleasure and health"), which achieved considerable popularity and has the distinction of being considered the first printed cookbook.