Abstract: A trash bag dispenser which can be universally fitted within any trash container having a generally flat central bottom portion. The dispenser is also removable from the trash container to replace the roll of bags and to clean the trash container. A single bag is individually dispensed within the trash container from a roll of bags. The dispenser comprises: a housing to hold the roll of trash bags, said housing having a lower side portion, an upright side wall, and an upper side portion having a bag dispensing opening therein; and, a removable and reattachable housing attachment strip to facilitate removable and reattachable attachment of the housing to the trash container. After a first bag is pulled from the trash bag dispenser, subsequent bags are automatically pulled therefrom when a preceding bag is filled and removed from the trash container. Most preferably, the attachment strips comprise mated self adhering hook and loop strips such as those sold under the TM VELCRO.