Niculae is a Romanian given name and surname. Notable people with it include:

• Niculae Cocea (1880–1949), Romanian journalist, novelist, critic and left-wing political activist
• Niculae-Cornel Crăciun (born 1925), Romanian Nordic skier
• Niculae Conovici (1948–2005, Bucharest), Romanian archeologist, amphorologist and numismat
• Niculae Flocea (born 1987), Romanian sprint canoer
• Niculae Fulgeanu (born 1971), Romanian former water polo player
• Nicolae I. Herescu (1906–1961), Romanian classical scholar, essayist, translator and poet
• Niculae M. Popescu (1881–1963), Romanian theologian, historian and priest of the Romanian Orthodox Church
• Niculae Nedeff (1928–2017), Romanian handballer
• Nicolae Pătrașcu (ca. 1580–late 1627), Rulers of Wallachia
• Niculae Zamfir (born 1958), Romanian wrestler

• Constantin Niculae (born 1955), Romanian judoka
• Daniel Niculae (born 1982), Romanian Footballer
• Ioan Niculae (born 1954), Romanian businessman and entrepreneur
• Marius Niculae (born 1981), Romanian footballer