Miguel Ángel Ayuso Guixot, MCCJ (17 June 1952 – 25 November 2024) was a Spanish prelate of the Catholic Church and a historian of Islam.

[5] He served as the Vatican's principal representative in restoring dialogue with Grand Imam Ahmed el-Tayeb of Cairo's Al-Azhar mosque, which were curtailed in 2011.

[8][9] His work culminated in the joint statement, the Declaration on Human Fraternity, issued by the Grand Imam and Pope Francis in February 2019 in Abu Dhabi.

[10] Ayuso Guixot has represented the Holy See as a member of the board of directors of the King Abdullah Bin Abdulaziz International Centre for Interreligious and Intercultural Dialogue (KAICIID), a joint initiative of Saudi Arabia, Austria, and Spain, since its founding in Vienna in 2012.

[15] Ayuso Guixot died in Rome's Gemelli Hospital on 25 November 2024, at the age of 72, after a long illness.