A spray can attachable actuator and brush assembly includes an actuator assembly attachable overtop a valve stem of an existing aerosol canister and a brush assembly attachable to the actuator assembly. A lower portion of a seating member frictionally engages to the aerosol canister when an attachment collar is rotationally engaged thereabouts. A head member is connectable into a seating connect disposed in a top surface of the seating member whereby an interior channel engages overtop the valve stem. A brush attachment base secures into the head member to position an elongate nozzle in open communication with an outlet terminating the interior channel. A brush body is securable to the elongate nozzle, and depression of the head member thereby enables selective release of fluid depressurized from the aerosol canister for delivery into the brush body for subsequent application to an object by manual action directing the brush body.