Young Left (Swedish: Ung Vänster [ˈɵŋː ˈvɛ̌nːstɛr] ⓘ) is a socialist, Marxist, and feminist youth organisation.

During the past years, the main focus of the organisation has been the struggle against growing xenophobia in Sweden (as they mean been witnessed by the electoral success of the Sweden Democrats during the national elections of 2010) and criticism of the right government, and in particular on its privatisations of welfare services and priorities of tax reductions, rather than increased public spending on welfare and investments in infrastructure and renewable energy.

Young Left was founded in 1903 as Socialdemokratiska Ungdomsförbundet (SDUF, Social Democratic Youth League).

In 1967, ultra-left elements took over the organisation, and broke away to form Marxist-leninistiska kampförbundet (Marxist–Leninist Struggle League).

Under the later years of the 2010s, different members of the Young Left have been excluded because of strong couplings to the Revolutionary Front and the AFA.

This is because these groups are not deemed compatible with the democratic socialism and anti-racism fight that the Young Left are driving.