Al Haj Abdul Hadi Italo Chiussi was an Ahmadi Muslim who was formerly an Italian Esperantist and later translated the Holy Quran into the Esperanto language.

He was born in Trieste, Italy. In a staunch Catholic family, he received his basic education at a senior high school in the multiethnic city of Harburg and acquired his doctorate in mathematical sciences with distinction from the University of Pisa.

One day, during a leisurely walk with his son in front of Nur Mosque of Frankfurt, he casually paid a brief visit to the building. Later, this brief introduction developed into a deep connection, and he began learning the Arabic language and reading the Holy Quran.

In 1967, when Hazrat Mirza Nasir Ahmad (rh), Khalifatul Masih III, visited Europe, Mr Italo had the blessed opportunity to meet him. This was a turning point in his life. He became a sincere and devoted member of the Jamaat and had already started praying five times daily and fasting in the holy month of Ramadan, all done secretly from his family.

He visited Mecca and Medina, went to Qadian and travelled to Jalsa Salana Rabwah in 1970. His travelogue, containing his spiritual experiences during his visit to the holy city of Mecca was much loved by Hazrat Mirza Tahir Ahmad (rh). 

He knew French, English, German and classical Arabic, and remained a humble student of Islam till his last breath. 

Mr Chiussi wanted to serve the word of God, thus he chose to translate it into the Esperanto language. It is the most widely spoken constructed international auxiliary language, created by LL Zamenhof, a Polish-Jewish ophthalmologist, in the late nineteenth century. He dispatched copies of the translation to many dignitaries around the world.  

He passed away in 1973. 

Hazrat Mirza Nasir Ahmad (rh), Khalifatul Masih III, went to his grave and prayed there during his 1976 tour.