Oriol Mitjà i Villar (born 1980) is a Catalan-born Spanish researcher and consultant physician in internal medicine and infectious diseases with expertise in poverty-related tropical diseases. He has conducted research at the Lihir Medical Centre in Papua New Guinea since 2010 on new diagnostic and therapeutic tools to eradicate yaws. He was awarded the Princess of Girona Award in the scientific research category. Currently at the Germans Trias i Pujol Research Institute, Mitjà is conducting research on SARS-CoV-2 coronavirus disease (COVID-19) and strategies to control the infection at a community level.