Carolus Rex (disambiguation)
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)