Neculai is a Romanian male given name and variant of Nicolae. It may refer to:

• Neculai Munteanu (b. 1941), Romanian anti-communist dissident
• Neculai Onțanu (b. 1949), Romanian politician
• Neculai Păduraru (b. 1946), Romanian sculptor and painter
• Neculai Rățoi (1939 – 2016), Romanian politician
• Neculai Alexandru Ursu (1926 – 2016), Romanian linguist, philologist and literary historian
• Neculai Vasilcă (b. 1955), Romanian handball player

• Aleksandr Botsjarov
• Aleksandr Bratchikov
• Aleksandr Braudo
• Aleksandr Brudno
• Aleksandr Burago
• Aleksandr Buturlin
• Aleksandr Chakovsky
• Aleksandr Chekalin
• Aleksandr Chekalin (politician)
• Aleksandr Chernyshyov
• Aleksandr Chertoganov
• Aleksandr Chestnikh
• Aleksandr danilovich aleksandrov
• Aleksandr Dedushkin
• Aleksandr Deineka
• Aleksandr Demyanenko
• Aleksandr Derevjagin
• Aleksandr Derevyagin
• Aleksandr Deyneka
• Aleksandr Dityatin
• Aleksandr Dmitrievich Dubyago
• Aleksandr Dmitrievich Protopopov
• Aleksandr Dmitrijev
• Aleksandr Dmitriyev (conductor)
• Aleksandr Dmitriyevich Protopopov