CA

Ca is an abbreviation that may refer to:


 * Cap'n Arnav, a pirate captain involved in Cap'n Arnav's Chest random event.
 * Clan avatars, the floating magical essence of Clan Citadels.
 * Caden Azro, one of the archeologists inside the Varrock Museum in Varrock.
 * Cape of Accomplishments.
 * Carnillean armour, a platebody obtained during the Hazeel Cult quest.
 * Cook's Assistant, a novice quest played in Lumbridge.
 * Cosmic Altar, the runecrafting altar where cosmic runes can be made on.
 * Clean avantoe, the clean version of the grimy avantoe.
 * Cloth altar, an altar which can be built in a Player Owned House.