A tape dispenser is adapted to dispense lengths of adhesive tape from a roll of adhesive tape wound upon a cylindrical tape core. The tape dispenser comprises a first sidewall and a second sidewall generally parallel to the first sidewall. Each sidewall has a hub structure, a tape retaining tab, and a foot portion located between the hub structure and the tab. The tape core is rotatably supported on the hub structures of the first and second sidewalls. A tape guide portion interconnects the first and second sidewalls. A cutter is located at a forward end of the tape guide portion. A roller is rotatably supported between the sidewall front portions. The roller is beneath the tape guide portion and adjacent the cutter. The tape dispenser is configured to allow a user to only use one hand to hold the tape dispenser and dispense a length of tape on an associated substrate.