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identified in 85 (57%) patients, the causes being CMV in 42 (28.2%) patients, protozoal in 36 (24.2%) patients and bacterial in 7 (4.7%) patients. Faecal culture grew E.Coli 3 (2%), Klebsiela 2 (1.3%), Citrobacter 1 (1%) and Shigella 1 (1%). Entamoeba histolytica 16 (10.7%), Giardiasis 8 (5.4%), Strongyloides 5 (3.4%), Cryptosporidium 4 (2.7%), Anchylostoma 2 (1.3%),Microsporidia 1 (0.7%)& Cyclospora 1 (0.7%) were diagnosed by stool microscopy examination. Colonoscopy was done in 19 (12.8%) patients in whom 3 patients had CMV colitis. Hypotension occurred in 46 (31%) patients, leukopenia in 45 (30.2%) and hypokalaemia in 20 (13%) patients. Temporary graft dysfunction during diarrhoeal episode occurred in 67 (45%) patients & 7 (4.7%) required dialysis therapy. After diarrhoeal episode,16 (10.7%) patients developed persistent graft dysfunction & 3 (2%) patients expired. Even after extensive workup, in 64 (42%) patients the cause of diarrhoea could not be identified. Conclusions: 1)Diarrhoea occurred in 16.9% of renal transplant recipientsyt 2) Deceased donor source, use of induction immunosuppression and anti rejection therapy were significant risk factors 3)Infectious cause was identified in 57% of diarrhoeal episodes 4)Diarrhoea resulted in persistent graft dysfunction in 10.7% patients