Silvia Alejandra Fernández de Gurmendi (born 24 October 1954) is an Argentine lawyer, diplomat and judge. She has been a judge at the International Criminal Court (ICC) since 20 January 2010 and President of the ICC from March 2015 to March 2018. She was elected to the presidency for a three-year term and served until March 2018. In 2020 she was elected to serve as President of the Assembly of States Parties to Rome Statute of the International Criminal Court for the twentieth to twenty-second sessions (2021-2023).