| Meaning | watchful, vigilant |
| Origin | Greek, Latin |
| Gender | Boy |
| Popularity | Moderate |
| Length | 8 |
| Syllables | 4 |
| Syllabification | Gre-go-ri-o |
Gregorio brings Old World charm and continental sophistication to contemporary naming. This variant offers a fresh take on Gregory, infusing additional character through its Romance language connections. The name possesses a robust, confident sound—three syllables that roll together with pleasing rhythm and substance. Gregorio suggests a family that values cultural heritage, whether Italian, Spanish, or simply appreciates international flair in naming choices. The name has a distinguished air without feeling stuffy, maintaining approachability through its warm vowel sounds. Boys named Gregorio benefit from built-in nickname options: Greg for casual settings, Gio for something more stylish, or the full Gregorio when formality calls. The name ages exceptionally well, sounding equally appropriate for a kindergartener, a college student, or a seasoned professional. It carries implications of strength and reliability, qualities often associated with traditional names while offering enough distinctiveness to prevent blending into the crowd. Parents seeking a name with European elegance that still functions smoothly in English-speaking environments will find Gregorio delivers both character and practicality.
| Greg |
| Goyo |
| Gorio |
| Rigo |
| Gregorio Allegri | Italian composer |
| Gregorio Marañón | Spanish physician and scientist |
| Gregorio Luperón | Dominican military and political leader |
| Gregorio del Pilar | Filipino revolutionary general |
| Gregorio Ricci-Curbastro | Italian mathematician |
| Gregorio Manzano | Spanish football manager |
| Gregorio Álvarez | Uruguayan military officer |
| Gregorio Pérez | Uruguayan football manager |
| Gregorio Perfecto | Filipino politician and journalist |
| Gregorio Honasan | Filipino politician and soldier |
| Gregorio "Goyo" Martínez | Argentine footballer |
| Gregorio Cortez | Filipino boxer |
| Gregorio Conrado Álvarez | Argentine military officer |
| Gregorio Fuentes | Cuban fisherman and inspiration for "The Old Man and the Sea" |
| Gregorio Aznárez | Uruguayan politician |
| Gregorio Santos | Peruvian politician and activist |
| Gregorio Sancianco | Filipino lawyer and historian |
| Gregorio Ramírez | Venezuelan painter |
| Gregorio Pio Catapang | Filipino military officer |
| Gregorio "Greg" Heffley | "Diary of a Wimpy Kid" series |
| Gregorio "Greg" Cortez | Character in "Desperado" film |
| Gregorio "Greg" Serrano | Character in TV series "Crazy Ex-Girlfriend" |
| Gregorio "Goyo" Villalobos | Character in "Heneral Luna" film |
| Gregorio "Goyo" Garcillano | Character in "The Bourne Ultimatum" film |
| Gregorio "Greg" Lee | Character in TV series "My Wife and Kids" |
| Gregorio "Goyo" Jiménez | Character in "Los Serrano" TV series |
| Gregorio "Greg" Mendel | Geneticist and character in various media |
| Gregorio "Goyo" Tapia | Character in "La Patrona" TV series |
| Gregorio "Greg" House | Character in TV series "House" |
| Gregorio "Goyo" Monreal | Character in "Cásate Conmigo, Amor" film |
| Gregorio "Goyo" Mejía | Character in "Un Gancho al Corazón" TV series |
| Gregorio "Greg" Jones | Character in TV series "Dharma & Greg" |
| Gregorio "Goyo" Rodríguez | Character in "La Que No Podía Amar" TV series |
| Gregorio "Goyo" Bautista | Character in "Goyo - Ang Batang Heneral" film |
| Gregorio "Goyo" Escalera | Character in "María la del Barrio" TV series |
| Gregorio "Greg" Focker | Character in "Meet the Parents" film series |
| Gregorio "Goyo" Barrios | Character in "La Fea Más Bella" TV series |
| Gregorio "Goyo" Zaidal | Character in "Rubí" TV series |
| Gregorio "Greg" Dawson | Character in "Greg's First Day" book series |