The Little Metropolis (Μικρή Μητρόπολη), formally the Church of St. Eleutherios (Άγιος Ελευθέριος) is a Byzantine church located next to the large Metropolitan Cathedral of Athens ("Great Metropolis").

The Little Metropolis Church - measuring just seven by eleven meters - is one of the smallest churches in Athens, but is also considered one of the oldest and most beautiful. It was built on an old temple - most probably in the early 13th century - and was mainly used for intercessions by pregnant women. Before the Great Metropolis Church was built, it was even a bishop's church.