Carlo Antonio Manzini

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Conte Carlo Antonio Manzini (1599-1677/1678) was an Italian astronomer and mathematician. (His last name is sometimes given as Mangini or Mansini.)

He was a member of the local nobility of Bologna. In 1626 he published Tabulae primi mobilis: quibus nova dirigendi ars et praecipuè circuli positionis inventio, non minus facilis quam exacta ostenditur. This volume presented tables for the construction of astrological charts.

His 1660 work, L'occhiale all'occhio, dioptrica practica, is one of the oldest accounts of the techniques for manufacturing lenses through grinding and polishing.

Sources list his year of death as 1677 or 1678. The crater Manzinus on the Moon is named after him.