Aslan Pasha Mosque, Ottoman mosque and ethnographic museum in Ioannina, Greece.

Aslan Pasha Mosque is an Ottoman-era house of worship located within the fortress of Ioannina and now operates as an ethnographic museum. The building features a domed prayer hall, a minaret rising with many steps, and holds displays of crafts, clothing, and religious objects from multiple faith traditions.

The structure was constructed in 1618 and occupies the site of an earlier Christian church that had stood on that ground for centuries before. Over the following centuries it served as the central place of worship for the Muslim community before eventually being converted into a museum.

The museum displays objects from daily life belonging to Christian, Muslim, and Jewish residents who once lived together in the city. Visitors can see clothing, jewelry, and household items that reveal how different faith communities coexisted in this space.

The building stands inside the castle of Ioannina, so access follows the fortress grounds rather than the main square. The minaret was damaged by a Mediterranean cyclone in September 2018 and restored from August 2019; its stairs are not open to visitors. The museum has occupied the mosque since 1933.

Aslan Pasha's own tomb stands in the mosque grounds, beside that of his wife, a Greek Orthodox woman from an elite Ioannina family said to descend from Byzantine nobility or the Despotate of Epirus aristocracy. The minaret was damaged by a Mediterranean tropical-like cyclone in September 2018 and restored from August 2019.