Allegra Poljak (, born 5 February 1999) is a Serbian professional footballer who plays as a winger and a forward for Spanish Liga F club Madrid CFF and the Serbia women's national team.
Allegra started her career in her hometown club Spartak Subotica in Serbia. After playing 4 seasons at the top league, Poljak left for the Hungarian Champions Ferencvárosi TC where she spent 2 seasons playing 32 games and scoring 27 goals. Poljak joined the Spanish side of UDG Tenerife in 2019 and played there until June 2021. Poljak moved to Real Sociedad in July 2021.
Poljak was an under-19 international for Serbia. and made her debut for the Senior national team of Serbia in 2015, at the age of 16. She has represented Serbia 10 times, scoring 3 goals.