Abstract: A merchandise display adapter system includes merchandise display adapter including a vertical display panel, a support leg extending transversely from the bottom of the display panel and attachable to a merchandise display fixture compartment, and a package support means attachable to the display panel for displaying a merchandise package. The merchandise display adapter has a dimension for displaying a merchandise package of a size different than the dimension of compartments in an existing display fixture. When the display panel is placed into a display fixture compartment and the support leg is attached to the compartment, the merchandise display fixture is adapted to display the merchandise package having a size different than the fixed-dimension compartments. Such a merchandise display adapter and adapter system are particularly useful for adapting a merchandise display fixture having compartments arranged in a terraced configuration.