The present invention disclosed herein relates to a transfer robot and a substrate processing apparatus having the same, and more particularly, to a transfer robot for transferring a substrate through a transfer module and a substrate processing apparatus having the same. The substrate processing system according to the present invention includes: a transfer module (300) provided with a transfer robot (500) configured to transfer substrates (10); one or more dual process modules (100) each of which is installed at one side of the transfer module (300) so that two substrates (10) are accessible at the same time and on which a pair of substrate support units (13) configured to respectively seat the two substrates (10) thereon are disposed horizontally; and one or more single process modules (200) each of which is installed at one side of the transfer module (300) so that one substrate (10) is accessible and on which one or more substrate support units (13) configured to seat the substrates (10) thereon are provided. The transfer robot (500) includes a first substrate seating unit (510a) and a second substrate seating unit (510b), each of which has a seating surface (11), on which the substrate (10) is seated, and which are disposed on the same first plane, and at least one of the first substrate seating unit (510a) or the second substrate seating unit (510b) is installed to be rotatable about a vertical rotation axis (C1) so as to be disposed in a region in which the at least one of the first substrate seating unit (510a) or the second substrate seating unit (510b) does not interfere with the substrate transfer when the substrates (10) are transferred.