The Slovenia national under-21 football team is the national under-21 football team of Slovenia, under the control of the Football Association of Slovenia. This team is intended for Slovenian players who are 21 years of age or younger at the start of the calendar year in which the biennial UEFA European Under-21 Championship campaign begins, so some players may remain in the team until they are 23.
The under-21 national team was formed in 1992, a year after Slovenia gained independence from Yugoslavia. Their first competitive campaign was the 1996 UEFA European Under-21 Championship qualifiers, where Slovenia failed to qualify after finishing third in their qualifying group, two points behind group winners Italy. Slovenia made its first appearance at the European Under-21 Championship in 2021, automatically qualifying as co-hosts.