This paper investigates the study of single and multiple complementary strip ring resonator (CSRR) loaded microstrip patch antennas (MPA's). Three different designs with CSRR loaded MPA's are examined and compared the obtain results with without CSRR patch. The miniaturization of MPA and multi band frequency resonance was observed with the increasing number of CSRR's on patches of the designs. The design-1 is resonant at frequency 5.5GHz, the design-2 is resonant at frequency 5.27GHz, the design-3 is resonant at two frequencies 5.16 & 7.12GHz and the design-4 is resonant at four frequencies 4.65, 5.04, 5.84 & 7.85GHz respectively. The surface current distributions and radiation patterns of four designs are studied. © 2015 IEEE.