Abstract: An exemplary hanging file folder retainer is provided that, in one embodiment, includes a first attaching member, a second attaching member, and a retaining member. The first and second attaching members couple to a hanging file drawer rail in order to secure the hanging file folder retainer to the hanging file drawer rail. The second attaching member is linearly disposed from the first attaching member such that the hanging file folder retainer is secured to the hanging file drawer rail in at least two locations. The retaining member has a length sufficient to at least span the distance between said first and second attaching members and is functionally coupled to the first and second attaching member such that, in at least one functional position, the retaining member inhibits hanging file tabs from disengaging from the hanging file drawer rail.