Family name Petronel (Petronel 
, Petrinal 
) , in all the world, is a rare last name. The family name Petronel is characteristic of Romania, where it is quite a rare surname, Spain, where it is a rare surname, and Greece, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Romania, Spain, and Italy. More frequently, Petronel is the forename as well as the last name.