The name Rainier (/rəˈnɪər/ or /reɪˈnɪər/; [ʁɛˈnje], a French form of Rainer) may refer to
Given name:
Reginar II, Count of Hainaut (890–932), also written Rainier II
Rainier, Margrave of Tuscany, Margrave of Tuscany from 1014 to 1027
Rainier, Marquess of Montferrat (c. 1084 – 1135)
Saint Rainier (c. 1117 – c. 1160), Pisan saint
Renier of Montferrat (1162–1183), son-in-law of Byzantine Emperor Manuel I Komnenos
Several princes of Monaco, all of the House of Grimaldi:
Rainier I of Monaco, Lord of Cagnes (1267–1314)
Rainier II, Lord of Monaco (14th century)
Rainier III, Prince of Monaco (1923–2005)
Surname:
Peter Rainier, Jr. (1741–1808), a British naval leader
Priaulx Rainier (1903–1986), South African-British composer
Fiction:
Charles Rainier, main character in Random Harvest by James Hilton
Rainier Wolfcastle, an action hero star in the Simpsons
