a bag holder for holding a plain bag in an open position for filling by supporting in a cuff at the bag opening has a bag support with improved cuff attachment means without accessory bands or clamps for obtaining quick installation and secure retention of the bag , including those made of slippery plastic film . in one construction of the bag support , resilient tensioning means provides nearly constant low force peripheral tensioning of the cuff by three corner grips of appreciable area . each corner grip has a smoothly curved initial grip surface for holding the outer fold of the cuff tensioned over a smoothly curved snubber grip surface thereby holding the cuff with a self locking action . a grip surfacing on the grip surfaces provides a high grip coefficient for obtaining self locking of the snubber grip when a bag load is applied . the corner grip type cuff attachment wherein the sides of the tensioned cuff span the sides of the bag opening also provides for new frame constructions permitting unobstructed sidewise movement of the bag and further permits more compact folding for stowage by overlap of the parts . in an equivalent grip construction , resilient means in each grip provide the initial grip contact pressure .