The original club was founded in 1928 as
SK Tri zvezde. They played qualifications for the
Yugoslav Football Championship in 1933, losing to
Split in a two-legged playoff tie (5–4 on aggregate). The club would change its name several times during the late 1930s and early 1940s, competing as
Apatinski SK,
SK Apatin, and
SU Apatin. In 1951, the club became known as
FK Mladost. and again from 1980 until 1988, when the competition was demoted to become the fourth tier. After the
breakup of Yugoslavia, the club earned promotion to the newly formed
Serbian League Vojvodina in 1995. They spent two seasons in the third tier, finishing as champions in 1996–97 to earn promotion to the
Second League of FR Yugoslavia. They spent
one season in the elite division, finishing second from the bottom. The club subsequently spent three seasons in the
Serbian First League, before suffering relegation to the Serbian League Vojvodina in 2010. They would suffer another relegation in the following
2010–11 season. They would immediately gain promotion to the fifth tier in 2012 and later to the
fourth tier in 2014. ==Honours==