Mijat Gaćinović (Serbian Cyrillic: Мијат Гаћиновић, pronounced ; born 8 February 1995) is a Serbian professional footballer who plays as a midfielder for German club Eintracht Frankfurt.
Gaćinović was born in Novi Sad while his father Vladimir played for FK Bečej. His family is from Trebinje, where Gaćinović returned when his father finished his career. He started to play football at Leotar, before joining the youth academy of Vojvodina. He made his first team debut under manager Nebojša Vignjević on 19 March 2013, coming off the bench as a substitute for Miroslav Vulićević in a 3–0 home win over Donji Srem. On 18 May 2013, Gaćinović scored his first senior goal in a 3–2 home league victory over Radnički Niš.
After already establishing his place in the starting lineup, Gaćinović helped Vojvodina win the 2013–14 Serbian Cup in the club's centennial year. He was named the team's captain in early 2015, eventually becoming their top league scorer in the 2014–15 season, netting 11 goals.