The Baloch Students Organization (BSO; Urdu: بلوچ اسٹوڈنٹس آرگنائزیشن) is an student organisation that campaigns for the students of Pakistan's Balochistan Province. It was founded as a student movement on 26 November 1967 in Karachi and remains the largest ethnic Baloch student body in the country. It got divided due to ideological differences. BSO Pajjar and BSO Mengal affiliated itself with the parliamentary framework of Pakistan. Dr Allah Nazar, founder of separatist wing, In 2002 while he was studying in college, he created a breakaway faction — BSO–Azad — that advocated armed struggle for "Greater Baluchistan" based on Iran Afghanistan and Pakistani Baloch areas. The Pakistani government banned the BSO Azad on 15 March 2013, as a terrorist organisation, an action condemned by the Asian Human Rights Commission.
There is an alleged link between BSO and India, with Pakistan accusing the Indian intelligence agency RAW of having "assets" within BSO, an allegation denied by India and activists in BSO.
Baloch Students Organization (BSO) has its origins in Warna Waninda Gal (Youth Educational Forum) launched in 1961, three years after the Pakistan Army arrested the Khan of Kalat giving rise to Baloch nationalism. Abdul Hakeem Baloch was its first president. The stated objectives of the organization included "promoting Balochi language and literature and debating political conditions."