Featured Image Credit: AFSA / Joaquin Sosa
Ambassador Linda Thomas-Greenfield became the 31st winner of AFSA’s Lifetime Contributions to American Diplomacy Award in an October 1, 2025, ceremony at Georgetown University. She was honored for her deep commitment to the Foreign Service, mentorship, and leadership throughout an eminent diplomatic career, and for her continuing work to promote American global leadership, a strong Foreign Service, and State Department improvement.
AFSA’s highest tribute, the Lifetime Contributions to American Diplomacy Award is given annually to recognize an individual’s lifetime devotion to the work of diplomacy and to its practitioners. Past recipients include such luminaries as George H.W. Bush, Thomas Pickering, Ruth A. Davis, George Shultz, Richard Lugar, Joan Clark, Ronald Neumann, Nancy Powell, William C. Harrop, Thomas Boyatt, Edward Perkins, John D. Negroponte, Anne Patterson, and Marc Grossman.
As a career diplomat from 1982 to 2017, Linda Thomas-Greenfield had a wide range of important assignments for six presidents, both Republican and Democrat. She served as Assistant Secretary of State for African Affairs (2013-2017), where she led U.S. policy development for sub-Saharan Africa and played a critical role in the U.S. response to Ebola. And she served as Director General of the Foreign Service and Director of Human Resources (2012-2013), overseeing the department’s 70,000-strong workforce.
In 2008 Thomas-Greenfield was named U.S. ambassador to Liberia, where she served until 2012, supporting programs that rebuilt the country’s social and physical infrastructure and restored the rule of law. Other notable overseas roles include postings in Switzerland, Pakistan, Kenya, The Gambia, Nigeria, and Jamaica. In Washington, D.C., she also served as Principal Deputy Assistant Secretary in the Bureau of African Affairs (2006-2008) and as Deputy Assistant Secretary in the Bureau of Population, Refugees, and Migration (2004-2006).
Most recently, Thomas-Greenfield served as the U.S. ambassador to the United Nations (UN) and U.S. representative at the UN Security Council (2021-2025), called out of retirement to do so. She also served as a member of the president’s Cabinet and the National Security Council during that time.
At the United Nations, Amb. Thomas-Greenfield undertook a robust agenda to help restore and strengthen American global leadership and mobilize the international community to address global challenges. As part of her work, she rallied bipartisan and worldwide support for Ukrainian sovereignty and held Russia to account for violating international laws and norms.
She secured establishment of the Multinational Security Support Mission in Haiti (now the Gang Suppression Force) to address gang violence and restore long-term stability. She highlighted the need for increased humanitarian aid to Gaza while emphasizing Israel’s right to self-defense after the October 7, 2023, events. Additionally, she highlighted the urgency of the crisis in Sudan, mobilizing aid and personally assessing the humanitarian response during a trip to Chad.
Amb. Thomas-Greenfield is widely regarded as a trailblazer in the foreign affairs community. When she joined the U.S. Foreign Service in 1982, few Black women were in its ranks. She grew up in segregated Louisiana, the eldest of eight children to hardworking but poor parents, and became a first-generation high school graduate in 1970. She graduated from Louisiana State University in 1974, one of the few Black students in her class. She went on to earn a master’s degree in public administration in 1975 at the University of Wisconsin (UW), where she also pursued doctoral studies, and then taught political science at Bucknell before joining the Foreign Service.
Thomas-Greenfield is known for her relationship-building and problem-solving acumen and her leadership skills. In the course of overcoming challenges in her life and career, she developed what she calls “adversity muscles,” namely the ability to grow stronger in the face of hardship. She also learned to lead with kindness and compassion, and in her remarks at the AFSA ceremony, she called her unique approach “gumbo diplomacy,” which emphasizes building relationships through shared experiences—much like the process of creating the classic Louisiana dish. “Treating people well matters,” she says. “It will outlive the work we do.”
Over the years, her strong community outreach and ability to connect with locals earned her the accolade “The People’s Ambassador” by local media in Liberia. “She has never met someone she cannot turn into a friend,” Senator Chris Coons (D-Del.) observed during Thomas-Greenfield’s January 2021 confirmation for the post of ambassador to the United Nations, adding: “She is also battle tested and tough as nails, having overseen our responses in nations to some of the most complex and grinding crises in the world.”
In retirement, Amb. Thomas-Greenfield joined the Albright Stonebridge Group as head of the Africa Practice and served as Distinguished Resident Fellow in African Studies at Georgetown University’s Institute for the Study of Diplomacy (2017-2019). She also co-chaired an advisory committee for the Council on Foreign Relations special report, “Revitalizing the State Department and American Diplomacy” (2020). Based on her own experience, she believes the U.S. Foreign Service should better reflect America and find strength in diversity.
Throughout her Foreign Service career, as well as in retirement, Amb. Thomas-Greenfield has also been a devoted mentor, sharing her passion for diplomacy, her appreciation for the support of her own mentors, and her insight into overcoming challenges with young colleagues, students, and potential future diplomats. She credits her experience at UW for preparing her to succeed on the world stage, citing the school’s academic rigor, its international reach, and the ways it pushed her beyond her comfort zone—and she remained connected to the campus and its students throughout her career, returning often to speak and participate in various programs.
Amb. Thomas-Greenfield is the recipient of the Secretary’s Distinguished Service Award and other State Department honors. She is married to Lafayette Greenfield, a retired Foreign Service specialist, and the couple has two grown children, daughter Lindsay (a former Foreign Service specialist) and son Lafayette, known as “Deuce” (an attorney), and three grandchildren, Lydia, Luca, and Lola.