Throughout the world, Carlo Antonio (Carlo Antonio 
) is a rare masculine first name. The first name Carlo Antonio is habitual in Chile, where it is a rare masculine name, Philippines, and the Dominican Republic. Measured by absolute frequency, it is commonest in Philippines, Italy, and Chile. Much less frequently, Carlo Antonio is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Carlo Antonio | Italy, Chile, Spain, Peru, Philippines |
Carl Anton, Carlos Antonio, Charles Anthony, Charles-Antoine, and Karl Anton
| carlo antonio crespi Italian painter and engraver, IT (b. 1712) |
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| carlo antonio napione Italian chemist and mineralogist (1756-1814), IT (b. 1756) |
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Co, Castro, Ciampa, Garcia, Galang, Guzman, Quinto, Morelli, Soriano, Angeles, Caminha, Coronel, Claudio, Llacuna, Bermillo, Ravanera, Espiritu, Marifosque, Almirante, Carulasan, Trabanelli, Calingacion, Apdian, Aytona, Abalos, Suarez, Uy, Mao, Jao, Soto, Ates, Chua, Cruz, Vigo, Magno, Siose, Pangilinan, Cielo, Perez, Ramos, Roxas, David, Gallo, Guidi, Leyco, Lopez, Tulio, Santos, Banan, and Javillonar