In this prospective study we compared renal transplant stiffness measured with MRE and ARFI ultrasound in 9 patients. Repeatability of both modalities was determined through test-retest imaging in 5 patients. MRE stiffness was significantly lower than ARFI stiffness as expected. MRE test-retest repeatability was excellent with mean coefficient of variation (CV) of 6%, while ARFI had CV of 30%. In addition, ARFI measurements exhibited a high inter-quartile range in the majority of cases suggesting inconsistency in the measurements. Our results suggest MRE is a more robust choice for renal transplant measurement compared to ARFI.