Surname โรจนะ (Rojna 
, Rojjan , โรจนะ 
) , globally, is a rare family name. The family name โรจนะ is habitual in Thailand, where it is a rare surname, Poland, and the United States, where it is an extremely rare surname. Not in comparison with a country's population, the name is most common in Thailand, Poland, and India. More prevalently, โรจนะ is the forename as well as the last name.