Utilization of multiple arterial grafting (MAG) in the United States is less than 10%. Trainee experience with MAG has not previously been examined. A total of 497 thoracic surgery residents in accredited training programs in March 2019 and 115 who completed residency in 2018 were electronically surveyed regarding their experience with MAG using a radial artery (RA) graft or bilateral internal mammary artery (BIMA) grafts with a skeletonized mammary (SM). Eighty-four (14%) trainees responded: 54% had completed 2+ years of training and 87% declared their focus as cardiac, undecided, or both cardiac and thoracic (CUB). Of all 84 respondents, 76% (n= 64 of 84) had no experience with RA harvest. A total of 35% (n= 29 of 84) had no experience with SM harvest. The majority, 68% (n= 57 of 84), used BIMA grafting in 0% to 5% of cases. A total of 61% (n= 51 of 84) used RA conduit in 0% to 5% of cases. Among trainees with 2+ years of experience, 56% (n= 25 of 45) had performed more than 6 SM takedowns, 18% (n= 8 of 45) had no experience. In trainees with 2+ years, 20% (n= 9 of 45) performed more than 5 RA harvests, while 80% (n= 36 of 45) had no experience. Examining integrated 6-year residents with greater than 3 years of experience, only 33% (n= 5 of 15) performed more than 5% RA grafting. A total of 90% of CUB trainees wanted to perform MAG in practice and 75% felt prepared to do so. Despite substantial variation in MAG training, respondents expressed an overwhelming interest in performing MAG. These data and the reality of MAG utilization in the United States indicate that a more rigorous, standardized approach to MAG training may be required.