A fishing tackle organizer, usable alone or with a tackle box system, provides convenient storage and display of fishing tackle. The organizer includes an elongated body having a plurality of sites for securing tackle, and a back surface with means for securing the organizer to a desired structure, such as, for example, in a tackle box, on a boat, a fishing dock or in a garage. Each of the plurality of sites includes a hole in the elongated body and may include either a surface slot extending from the hole or a recessed upper surface to allow tackle to sit securely within the organizer. A door panel may also be provided to close over the body to retain tackle within the holes. The tackle box system is customizable and may include at least one of the disclosed organizers fixed or detachably positioned within a closable container.