The Ibrahim Han Mosque (Greek: Τζαμί του Ιμπραήμ Χαν, from Turkish: İbrahim Han Camii), also known as the Sultan Ibrahim Mosque (Greek: Τζαμί του Σουλτάνου Ιμπραήμ), is a historical Ottoman mosque in the town of Rethymno, on the island of Crete, in southern Greece. Situated inside the old fortezza of Rethymno, the mosque was originally built as a church by the Venetians but converted into a mosque following the island's conquest at the hands of the Ottomans. Today it functions as an exhibition center.

It was built on the site of the Venetian Cathedral, a church built around 1583-85 and dedicated to Saint Nicholas.^[1] The Venetians transferred the cathedral seat to the fortezza after the previous church was completely destroyed^[2] during the 1571 invasion.^[3] In 1585, the successor bishop Carrara refused to hold masses in the church, claiming that it was not adequately equipped and the space was too narrow.^[3]

Very shortly after the town of Rethymno was conquered by the Ottomans, they demolished the church and built the mosque, dedicated to Sultan Ibrahim I in 1648, with a large, imposing dome.^[1][4] The complaed became property of the city of Rethymno in 1971; it was restored between 2002 and 2004 by the Ephorate of Byzantine Antiquities, and now it is used as an exhibition center.^[5]

The mosque's dome is 11 metres in diameter, and rests on eight arches.^[3][1] Today, the spherical triangles formed in the corners from the arches on its four walls can still be seen, and so does the arch above the entrance.^[2] Furthermore, the mihrab with its elaborate relief designs and the base of the demolished minaret inside the building are also still visible.^[2] The minaret, which once stood on the northwestern corner of the church/mosque,^[3] collapsed at the beginning of the twentieth century, and was never rebuilt.^[6]

• Islam in Greece
• List of mosques in Greece
• List of former mosques in Greece
• Ottoman Crete

• Katsipoulaki, Basileia (2009). Η τουριστική κίνηση του νομού Ρεθύμνης: Εξέλιξη και προοπτική [The tourist activity of the prefecture of Rethymno: Evolution and perspective] (Thesis) (in Greek). Kavala, Greece.
• Kolovos, Elias (2015). "Monuments sans héritiers ? Les édifices ottomans de Crète". Anatoli. 6 (6): 237–256. doi:10.4000/anatoli.308.
• Katsarakis, Antonis (2022). "The Architectural Grid ofIbrahim Han Mosque in Réthymnon, Crete". Nexus Network Journal 24 (2022):203–216

• Media related to Ibrahim Han Mosque at Wikimedia Commons