Nicholas III may refer to:
- Patriarch Nicholas III of Constantinople (died 1111), ruled 1084–1111
- Pope Nicholas III (c. 1225–1280), ruled 1277–1280
- Nicholas III, Lord of Mecklenburg (after 1230–1289 or 1290)
- Nicholas III of Saint Omer (died 1314)
- Nicholas III, Duke of Opava (c. 1339–1394)
- Patriarch Nicholas III of Alexandria, ruled 1389–1398
- Prince Karl Emich of Leiningen (born 1952), pretender to the Russian throne as Nicholas III
See also
Search for "Nicholas III" on Misplaced Pages.
- Nicholas (disambiguation)
- Niccolò III (disambiguation)
- Nikola III (disambiguation)
- All pages with titles beginning with Nicholas III
- All pages with titles containing Nicholas III
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