Abstract: Disclosed is a new lightweight snowplow dolly for aiding in removing and attaching a lightweight pickup truck-type snowplow blade assembly and also moving and storing the removed blade assembly. The lightweight snowplow dolly comprises a generally horizontal trapezoidal frame structure formed of side, front, and rear tubular steel members. The front member is longer than the rear member for supporting a plow blade whereas the rear member is spaced from the front member for supporting a plow frame. A downwardly depending fixed caster wheel assembly is mounted to the front member proximal each end thereof and a downwardly depending swivel caster wheel assembly is centrally mounted to the rear member. An upwardly projecting guide post is integrally mounted proximal each end of the front member whereby a plow vehicle operator may align the plow blade when positioning the plow assembly on the frame prior to removal from a vehicle.