Andrei, Andrey, or Andrej is a form of Andreas/Ἀνδρέας in Slavic languages and Romanian. People with the name include:Andrei of Polotsk, Lithuanian nobleman
Andrei Broder, Romanian-Israeli American computer scientist and engineer
Andrei Chikatilo (1936–1994), prolific and cannibalistic Russian serial killer and rapist
Andrei Denisov (weightlifter), Israeli Olympic weightlifter
Andrei Glavina (1881–1925), Istro-Romanian writer and politician
Andrei Gromyko (1909–1989), Belarusian Soviet politician and diplomat
Andrei Iosivas, American football player
Andrei Karlov (1954–2016), Russian diplomat
Andrei Kanchelskis, retired Russian football player
Andrei Khmel, Belarusian politician
Andrei Kirilenko (basketball), Russian basketball player in the NBA
Andrei Kirilenko (politician) (1906–1990), Russian Soviet politician
Andrei Kostitsyn, Belarusian hockey player
Andrei Lupan (1912–1992), Moldovan writer
Andrei Angouw, Indonesian politician and the incumbent mayor of Manado in North Sulawesi
Andrei Markov, Russian ice hockey player
Andrei Maslovskiy, Russian football player
Andrei Mironov (1941–1987), Soviet and Russian stage and film actor
Andrei Mozalev, Russian figure skater
Andrei Mureșanu (1816–1863), Romanian poet and revolutionary
Andrei Netto, Brazilian journalist and writer
Andrei Platonov (1899–1951), Russian-born writer of the Soviet period
Andrei Rațiu Romanian footballer
Andrei Rodrigues, Brazilian federal police delegate
Andrei Rublev, Russian painter
Andrei Sakharov (1921–1989), Russian physicist and activist, recipient of the Nobel Peace Prize
Andrei Tarkovsky (1932–1986), Russian film director
Andrei Ursu, previously known as Wrs, Romanian singer and dancer
Andrei Vasilevski, Belarusian tennis player
Andrei Zhdanov (1896–1948), Russian politician
Andrei Zhelyabov (1851–1881), Russian revolutionary
Andrei Zlătescu (1966-2017), Romanian academic