Ivan Aguéli (born John Gustaf Agelii; May 24, 1869 – October 1, 1917), also named Shaykh ʿAbd al-Hādī al-ʿAqīlī (Arabic: شيخ عبد الهادی عقیلی) upon his conversion to Islam, was a Swedish wandering Sufi, painter and author.

As a devotee of Ibn Arabi, his metaphysics applied to the study of Islamic esotericism and its similarities with other esoteric traditions of the world.

[5] In 1902 Aguéli moved to Cairo and became one of the first Western European to be officially enrolled at Al-Azhar University, where he studied Arabic and Islamic philosophy.

Its purpose was to promote the teachings of Muhyiddin Ibn Arabi among the "scholarly, educated and freethinking classes..."[8] through the practice of the Shadhili and Malamati Sufi paths.

The only time this society is mentioned is in a letter written by Aguéli in September 1911 to an unknown address in Cairo announcing its founding,[8] not much more is known.

Stranded in Spain, Aguéli was left without money to return to Sweden and on October 1, 1917, he was killed by a train at a rail crossing in the village of L'Hospitalet de Llobregat outside Barcelona.

[9] After Aguéli's death, Prince Eugen Bernadotte, who was known as a patron of artists, made certain to return his paintings and belongings to Sweden.

Aguéli's remains were kept in Barcelona, Spain until 1981, when he was brought back to Sweden and re-buried with Islamic rites in his hometown of Sala.