A collapsible cup has a base and a series of cylindrical body segments that together form a rigid cup body. The base includes a cylindrical base segment extending upwardly from the base and having an external thread. The series of cylindrical body segments are of graduated diameters which telescopically engage each other and the cylindrical base segment, and include an externally threaded upper portion, and an internal thread that extends the across all of an internal surface of each of the cylindrical body segments, such that each of the cylindrical body segments is threadedly engaged with and supported by either the external thread of the cylindrical base segment, or the externally threaded upper portion of one of the cylindrical body segments.