A collapsible wheelchair (CW) may be relatively small and lightweight and may be adapted to be easily collapsed/folded into a callable faint, allowing for easy storage, transport and use. The CW may be adapted to be collapsed/folded and expanded/unfolded in a series of simple steps, executable with one hand, by a person in a seated position, allowing for independent use even by a user with limited physical capabilities. The CW may have a relatively small width, allowing for access into constricted spaces. The rear and interior space between its large wheels may be unobstructed, leaving an unobstructed inner width, allowing the CW to be maneuvered in reverse over standing objects, such as a standard toilet. The seat of the CW may be equipped with a trap door, to allow the use of a toilet while seated on the CW. The rim may be beneath the seat for cleanliness.
