A portable, collapsible radiant heater includes a base and a support mounted to the base. The support has a collapsed position wherein the base is configured to at least partially receive the support, and an extended position wherein the support extends upwardly from the base. A heater-head for generating radiant heat is connected to the support. A reflector is mounted to one of the heater-head and the support. The reflector at least partially surrounds the heater-head for downwardly reflecting radiant heat generated by the heater-head. The reflector and heater-head are reciprocally movable between the collapsed position wherein the reflector and heater-head are in close proximity to the base and the extended position wherein the reflector and heater-head are distant from the base.