A modular luggage organization system may include a luggage container, a door, and a first coupling platform. The luggage container may define an interior space. The door may be coupled to the luggage container and movable between an open and closed position to respectively reveal and cover an interior of the luggage container. The first coupling platform may be positioned on an interior side of the door and may include a first frame defined by a first zipper half. The system may further include a plurality of insert units. Each insert unit may include a second coupling platform including a second frame defined by a second zipper half that is configured to interchangeably couple to the first coupling platform of the luggage container. The first zipper half and each of the second zipper halves may include a same number of teeth along corresponding zippable lengths.