Last name Regna (Regne 
, Regna 
) , around the world, is a rare cognomen. The family name Regna is characteristic of France, where it is a rare surname, Italy, and the United States, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in France, the United States, and India. More frequently, Regna is the forename as well as the last name.