Several single-center reports of using HCV-viremic organs for HCV-uninfected (HCV-) recipients were recently published. We sought to characterize national utilization of HCV-exposed donors for HCV-recipients (HCV D+/R−) in kidney transplantation (KT) and liver transplantation (LT). Using SRTR data (April 1, 2015-December 2, 2018) and Gini coefficients, we studied center-level clustering of 1193 HCV D+/R− KTs and LTs. HCV-viremic (NAT+) D+/R− KTs increased from 1/month in 2015 to 22/ month in 2018 (LTs: 0/month to 12/month). HCV-aviremic (Ab+/NAT-) D+/R− KTs increased from < 1/month in 2015 to 26/month in 2018 (LTs: <1/month to 8/month). HCV-recipients of viremic and aviremic kidneys spent a median (interquartile range [IQR]) of 0.7 (0.2-1.6) and 1.6 (0.4-3.5) years on the waitlist versus 1.8 (0.5-4.0) among HCV D−/R−. HCV-recipients of viremic and aviremic livers had median (IQR) MELD scores of 24 (21-30) and 25 (21-32) at transplantation versus 29 (23-36) among HCV D−/R−. 12 KT and 14 LT centers performed 81% and 76% of all viremic HCV D+/R− transplants; 11 KT and 13 LT centers performed 76% and 69% of all aviremic HCV D+/R− transplants. There have been marked increases in HCV D+/R− transplantation, although few centers are driving this practice; centers should continue to weigh the risks and benefits of HCV D+/R− transplantation. K E Y W O R D S clinical research/practice, hepatitis C, infection and infectious agents -viral, infectious disease, kidney transplantation/nephrology, liver transplantation/hepatology, Organ Procurement and Transplantation Network (OPTN), Scientific Registry for Transplant Recipients (SRTR)