Andrej is the form of the given name Andrew used in Slovak, Croatian and Slovene.
Notable individuals with the given name include:
- Andrej Babiš (born 1954), Czech politician
- Andrej Bajuk (1943–2011), Slovene politician and economist
- Andrej Čadež (born 1942), Slovene physicist and astrophysicist
- Andrej Karpathy (born 1986), Slovak-Canadian computer scientist
- Andrej Kiska (born 1963), Slovak politician and businessman
- Andrej Kramarić (born 1991), Croatian football player
- Andrej Meszároš (born 1985), Slovak ice hockey player
- Andrej Plenković (born 1970), Croatian politician
- Andrej Pohar (born 1974), Slovenian badminton player
- Andrej Sekera (born 1986), Slovak hockey player
- Andrej Stančík (born 1995), Slovak politician
- Andrej Stojaković (born 2004), Serbian–Greek basketball player