Ambassador António de Almeida-Ribeiro was born in Lisbon and graduated in 1976 from the Faculty of Law (Legal and Political Sciences), University of Coimbra.

He joined the Portuguese Ministry of Foreign Affairs in 1979, where he has held a variety of positions, among which Director General for Administration, Political Director and Secretary General.

Throughout his career, he has served as Permanent Representative to the Political and Security Committee of the European Union in Brussels, as well as Ambassador of Portugal to Argentina, Egypt, the Holy See, the Sovereign Order of Malta and Austria, where he was also Permanent Representative to the International Organizations based in Vienna, among other appointments around the world. In 2022, he was appointed Deputy Secretary-General of the King Abdullah Bin Abdulaziz International Centre for Interreligious and Intercultural Dialogue – KAICIID, and since January 2025, he has been serving as the Centre’s Acting Secretary-General.

He is awarded with several national and foreign decorations, as the Grand- Cross of the Order of Christ and Grand-Cross of the Order of Merit from Portugal.