The organ with maximum blood flow in ml/kg/min during resting is:

Resting blood flow of various organs in a normal man: Region (in kg) mL/min mL/100 g/min Liver (2.6) 1500 57.7 Kidneys (0.3) 1260 420.0 Brain (1.4) 750 54.0 Skin (3.6) 462 12.8 Skeletal muscle (31.0) 840 2.7 Hea muscle (0.3) 250 84.0 Ref: Barrett K.E., Barman S.M., Boitano S., Brooks H.L. (2012). Chapter 33. Circulation through Special Regions. In K.E. Barrett, S.M. Barman, S. Boitano, H.L. Brooks (Eds), Ganong's Review of Medical Physiology, 24e.