In a printing fluid cartridge, a cartridge body has a printing fluid delivery unit provided on a first cartridge-body surface. A bracket has at least a first bracket wall confronting the first cartridge-body surface, and a second bracket wall extending continuously from the first bracket wall in a first direction. The bracket is capable of moving relative to the cartridge body in a direction along which the second bracket wall contacts and separates from the cartridge body. A restriction member is configured to be detachably mounted on the cartridge body and the bracket, and is configured to, when the restriction member is mounted on the cartridge body and the bracket, restrict relative movement between the cartridge body and the bracket, with the second bracket wall of the bracket in contact with the cartridge body.