Neculai is a Romanian male given name and variant of Nicolae. It may refer to:
Neculai Munteanu (born 1941), Romanian anti-communist dissident Neculai Onțanu (born 1949), Romanian politician Neculai Păduraru (born 1946), Romanian sculptor and painter Neculai Rățoi (1939–2016), Romanian politician Neculai Alexandru Ursu (1926–2016), Romanian linguist, philologist and literary historian Neculai Vasilcă (born 1955), Romanian handball player