Inflatable curtain airbags and airbag assemblies are provided that can provide for top filling. The inflatable curtain airbag can include a top fill tube and one or more cushion segments. The top fill tube can extend at or adjacent an upper edge of the one or more cushion segments and the top fill tube can direct inflation gas from an inflator to the one or more cushion segments via channels or passages disposed away from one or more occupant receiving areas. The inflatable curtain airbags can also include one or more attachment areas disposed at or adjacent the upper edge of the one or more cushion segments. Mounting tabs may be coupled to the attachment areas and the mounting tabs may be used for installation of the inflatable curtain airbag in a vehicle.