Cognomen Petrosius (Petrosius 
) , around the world, is a rare last name. The family name Petrosius is characteristic of Lithuania, where it is quite a common surname, Albania, where it is a rare surname, and Ireland. In absolute terms, it most frequently occurs in Lithuania, the United States, and Albania. Much less frequently, Petrosius is the forename as well as the last name.
Mr, Laura, Linas, Lukas, Jacob, James, Jonas, Julie, Tadas, Tomas, Naomi, Helen, Ignas, Marius, Martha, Mantas, Morgan, Sandra, Steven, Alanas, Andrew, Arunas, Dodge, David, Darla, Rimas, Ed, Tim, Nic, Mark, Sara, Stan, Paul, Rasa, Leah, Luna, Agatha, John, Susan, Anton, Aidas, Audra, Carol, Coral, Becky, Peter, Robin, Rokas, Erin, and Petras