The US NRC Radiation Source Regulatory Partnership (RSRP) delivered a virtual workshop on “Design and Shielding Calculation for Linear Accelerators” for regulatory authorities in Latin America. The workshop was conducted in two four-hour (approximately) sessions on August 30-31, 2021. The seminar provided an overview of basic concepts such as workload, occupancy and use factors, HVL (Half Value Layer) & TVL (Tenth Value Layer), primary and secondary barriers, neutron dose and the application of the Time Average Dose Rate and Instant Dose Rates. Fifteen (15) participants attended the seminar.