Abstract: A tissue roll dispenser apparatus is provided for attachment to a tissue roll holder which includes a first spindle end receiver and a second spindle end receiver. The tissue roll dispenser apparatus includes a plurality of tissue rolls to be used in succession. The tissue roll dispenser apparatus includes a first support plug assembly for engagement with the first spindle end receiver and for receiving a first spindle end of a roll spindle. A second support plug assembly engages with the second spindle end receiver and receives a second spindle end of the roll spindle. A first housing extension is connected to the first support plug assembly, and a second housing extension is connected to the second support plug assembly. A tissue roll retention housing, which includes a first housing wall, is connected to the first housing extension. A second housing wall is connected to the second housing extension, and a housing floor extends between the first housing wall and the second housing wall.