Lothar Heinz Wieler (born 8 February 1961) is a German veterinarian and microbiologist who served as president of the Robert Koch Institute (RKI) from 2015 to 2023.

[1] In this capacity, he advised the German Federal and State Governments on topics of public health, especially infection hazards, and on the containment of the COVID-19 pandemic.

[3] Early in the COVID-19 pandemic in Germany, Wieler launched Europe’s first large-scale SARS-CoV-2 antibody testing in an effort to help researchers assess infection rates and monitor the spread of the virus more effectively; the study was carried out jointly by the Robert Koch Institute, Charité and the Helmholtz Centre for Infection Research.

[4] In addition to his role at RKI, Wieler was a member of the World Health Organization's Strategic and Technical Advisory Group for Infectious Hazards (STAG-IH) since 2018.

[6] Also in 2020, he was appointed to the Global Leaders Group on Antimicrobial Resistance, co-chaired by Sheikh Hasina and Mia Mottley.