Carolus Rex frequently refers to King Charles XII of Sweden
Carolus Rex () may also refer to:
King Charles (disambiguation), kings named Charles, who in Latin documents and on 17th-century English coins are referred to as "Carolus Rex" Carolus Rex (bastion), a portion of the Gothenburg city wall Carolus Rex (album), a 2012 album by Sabaton Carolus Rex March, a Swedish military march composed by Wilhelm Harteveld
See also
Charles Rex (disambiguation)
Carolus (disambiguation) Rex (disambiguation)