Yvonne Elizabeth Mewengkang (born 22 June 1982) is an Indonesian diplomat who is currently serving as the chief of staff to the foreign minister since 9 September 2025. She previously served as the deputy chief of staff.
Mewengkang was born in Palu on 22 June 1982 as the daughter of a soldier. Due to her father's career, she moved frequently during her childhood, living in different cities such as Makassar and Bandung for elementary school, and later in Denpasar for both middle and high school. After completing high school, she returned to her hometown to study communication sciences at the Sam Ratulangi University in Manado. Her studies sparked her interest in diplomacy. During her foreign service, she received a Edward E. Masters fellowship from the United StatesâÂÂIndonesia Society to study at the American University School of International Studies. She graduated with a master's degree in international politics in the summer of 2012.
Mewengkang began her foreign service career when she was awarded the prestigious Lambertus Palar Award, a scholarship specifically for Sam Ratulangi University students provided by the foreign ministry. In 2006, she passed the foreign civil service selection as a representative for North Sulawesi and starting her career in Jakarta. After completing her diplomatic training, she received her first assignment as a junior diplomat at the Permanent Mission of the Republic of Indonesia to the United Nations in New York, where she was involved in various important missions from 2013 to 2016.
Yvonne returned to Jakarta to undertook her mid-level diplomatic course, during which she visited Bengkulu to discuss efforts to promote the province's tourism and resource potentials. She was then assigned to handle peacekeeping issues at the Directorate of International Security and Disarmament before being named as deputy director (chief of subdirectorate) for Asia-Pacific and African intra and inter-regional cooperation.
She returned to New York from 2018 to 2022 as part of the Indonesian UN Security Council Task Force. During Indonesia's chairmanship of the United Nations Security Council in May 2019, Yvonne was involved in organizing meetings to handle international security matters. Yvonne stated that her workload would intensify dramatically during the prelude to the Syrian civil war which saw the escalation of violence in the country.
Upon serving in the permanent mission, she was recalled to Jakarta to serve as the personal secretary to foreign minister Retno Marsudi, equivalent to her deputy chief of staff. Under foreign minister Sugiono, on 9 September 2025 Mewengkang became the chief of strategic support bureau, a position equivalent to the foreign minister's chief of staff. Shortly upon her appointment, she was designated as the foreign ministry's first spokesperson, alongside second spokesperson Vahd Mulachela. The two were introduced to the media as spokesperson on 17 September.
Yvonne is married and has two children.