A pre-formed bags dispenser comprises a container (1) having an access aperture (8), a stack (9) of pre-formed bags (10) located in the container and having a first portion (12) deviated, preferably folded, at a transverse bend (11) from a second portion (13) containing mouth ends (18) of the bags, and attachment means (20) in the container separably attached to the mouth ends (18) at lines of weakening (22), e.g. perforations. Front walls (15) of the bags at the second portion (13), tensioned by the bending of the stack, are presented towards the access aperture (8). The bag nearest to the access aperture can be drawn out through the aperture by pulling its front wall, with one hand, relative to the attachment means. As the bag is so pulled its month is opened and the separable attachment to the attachment means is released. The attachment means, in one form, comprises a bar block separably joined to the mouths and/or handles of the bags. The container may be in the form of a box substantially closed apart from the access aperture, a tray or a bag.