Atanasio is a masculine given name which may refer to:
- Atanasiu di Iaci (Atanasio in Italian), 13th century Italian Benedictine monk and historiographer
- Atanasio Aguirre, President of Uruguay from 1864 to 1865
- Atanasio Bello Montero (1800âÂÂ1876), Venezuelan musician
- Atanasio Bimbacci (c. 1654âÂÂ1734), Italian painter of the Baroque period
- Atanasio Amisse Canira (born 1962), Mozambican Roman Catholic Bishop of Lichinga
- Atanasio EcheverrÃÂa y Godoy, late 18th-century Mexican botanical artist and naturalist
- Atanasio Girardot (1791âÂÂ1813), Colombian revolutionary leader
- Atanasio Ndongo Miyone (died 1969), musician from Equatorial Guinea, lyrics writer of the national anthem
- Atanasio Monserrate (), Indian politician