Abstract: A boat bumper holder for retaining and/or storing one or more boat bumpers onboard of a watercraft so that the boat bumpers may be easily and/or readily stored, identified, and deployed. The holder includes parallel columns that support upper and lower plates which each define cut-outs allowing for the insertion of boat bumpers. The upper and lower plates may also have additional fender cut- outs attached to them and which align with each other to permit easy and ready storage of additional boat bumpers. The cut-outs of the upper and lower plates and of the fender cut-outs may vary in geometry (e.g., to allow the insertion of boat bumpers of various shapes and geometries).