Otto II (disambiguation)
Otto II generally refers to Otto II, Holy Roman Emperor. It may also refer to:
- Otto II, Marquess of Montferrat (c. 1015 – 1084)
- Otto II, Margrave of Brandenburg (after 1147 – 1205)
- Otto II of Andechs and Merania (1208–1248)
- Otto II, Count of Rietberg (r. 1365–1389)
- Otto II of Hungary (1912–2011)