The Diocese of Lacedaemon o Lacedaemonia (Greek: Μητρόπολις Λακεδαίμονος/Λακεδαιμονίας) was a Christian ecclesiastical province in Laconia, Greece. Extant from at least the middle of the 5th century, it became a metropolis in 1083. During the period of Frankish rule, between ca. 1209 and 1278, it was held by Roman Catholic prelates, and remains a (vacant) titular see of the Catholic Church. The Greek Orthodox see was restored with the Byzantine reconquest in the 1270s, and continued until the see's abolition in 1852.