Abstract: A pet waste bag dispenser provided for dispensing pet waste bags, having a pouch body, a pouch cover, an attachment device for detachably attaching the front cover edge of the pouch cover on the front wall of the pouch body, and a bag dispenser, wherein the bag dispenser allows waste bags placed within the pet waste bag dispenser to be dispensed to a user easily and conveniently. The pet waste bag dispenser is made of a collapsible material, such that the dispenser is easy to store, light in weight, simple to manufacture, and has the flexibility to contain different amounts of pet waste bags within the pouch body, wherein rolls of or individually wrapped pet waste bags are allowed to be dispensed. The pet waste bag dispenser further has a pouch carrier for the pouch body to be carried around, so as to facilitate the user to easily obtain a pet waste bag from the dispenser.