A dispenser for pet waste disposal bags including a housing formed with an storage compartment and a lid moveable between open and closed positions; an opening formed in the lid providing access to the storage compartment; a plurality of disposable bags stored in the housing and accessible through the opening in the lid when the lid is in the closed position; and a cord attached to the housing. The cord may be engaged with a pet leash or pet collar and be cinched in order to tightly retain a bottom wall of the housing in close contact with an exterior surface of the pet leash or collar.