Ana Đurić (née Ignjatović; Serbian Cyrillic: Ана Ђурић, née Игњатовић; born 12 October 1978), known professionally as Konstrakta (Serbian Cyrillic: Констракта), is a Serbian singer-songwriter. Before pursuing a solo career in 2019, she rose to prominence as the lead vocalist of the indie pop band Zemlja gruva!, which was founded in 2007.
Konstrakta gained more significant fame after she had won the national selection competition for the Eurovision Song Contest 2022 in Turin, Italy with the song "In corpore sano".
She debuted as a member of the less-known group called Mistakemistake, but gained initial recognition as the lead singer of the Belgrade-based band Zemlja gruva!. They released three studio albums: WTF Is Gruveland? (2010), Dino u Zemlji Gruva (Dino in Grooveland, 2013), which covered songs by Croatian singer Dino Dvornik, and Šta stvarno želiš? (What Do You Really Want?, 2016). Some of the band's best-known hits include "Najlepše želje" (Best Wishes, 2010), "Nisam znala da sam ovo htela" (I Didn't Know I Wanted This, 2011), and "Jače manijače" (Harder You Maniac, 2013). Zemlja gruva! took part in Beovizija music festival in 2008 and 2009 with "Čudesni svetovi" (Wonderful Worlds) and "Svejedno mi je" (I Don't Care), respectively.