Nicholas I may refer to:
- Pope Nicholas I (c. 800–867), or Nicholas the Great
- Nicholas Mystikos (852–925), Patriarch Nicholas I of Constantinople
- Nicholas I (bishop of the Isles) (fl. 1147–1152), Bishop-elect of the Isles
- Nicholas I, Lord of Mecklenburg (died 1200)
- Nicholas I of Transylvania (died after 1203), voivode of Transylvania
- Nicholas I (bishop of Schleswig) (died 1233)
- Patriarch Nicholas I of Alexandria, Greek Patriarch of Alexandria between 1210 and 1243
- Nicholas I, Duke of Troppau (c. 1255–1318), natural son of king Ottokar II of Bohemia, became Duke of Troppau in Silesia
- Nicholas I, Lord of Rostock (died 1314)
- Nicholas I, Count of Tecklenburg (died 1367)
- Nicholas I Garai (died 1386), chief governor of Bratislava, palatine to the King of Hungary
- Nicholas I of Opole (c. 1424–1476)
- Nicholas I, Duke of Lorraine (1448–1473)
- Nicolaus I Bernoulli (1687–1759); Swiss mathematician
- Nicholas I, Prince Esterházy (1714–1790), Hungarian prince
- Nicholas I of Russia (1796–1855), Emperor of Russia and King of Poland
- Nikola I Petrović-Njegoš (1841–1921), King of Montenegro
See also
Search for "Nicholas I" on Misplaced Pages.
- All pages with titles beginning with Nicholas I
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- Niccolò I (disambiguation)
- Nicholas (disambiguation)
- Nikola I (disambiguation)
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: