Ghaus Bakhsh Bizenjo (Urdu/Baloch: میرغوث بخش بزنجو ) was a Pakistani politician from Balochistan.

[citation needed] In 1939 the Kalat State National Party (KSNP) arranged its annual convention in Mastung.

The Baloch League sent Mir Ghaus Bakhsh Bizenjo as a representative to attend the convention.

On 6 July 1939 an armed tribal force was sent by the Sardars of Balochistan to disrupt the annual rally of the KSNP.

Both Ghaus Bakhsh and Gul Khan thought this would be a good opportunity to further their political cause so, they joined the party.

Ghaus Bakhsh also persuaded Abdullah Jan Jamaldini, Ghulam Mohammed Baloch and Bahadur Khan to join Muslim League.

So, on 14 July 1955 Ghaus Bakhsh Bizenjo, Prince Abdul Karim, Mir Gul Khan Nasir, Mohammad Hussain Anqa and Qadir Bakhsh Nizamani formed the Usthman Gal which means "The People's Party".

One day Mir Ghaus Bakhsh bought some shot gun cartridges from an ammunition store.

Other Baloch leaders like Mir Gul Khan Nasir and Faiz Mohammad Yousafzai were also imprisoned and put in the "Quli Camp".

Ataullah Mengal quotes Mir Gul Khan Nasir as saying: In the 1970 General Election in Pakistan, the NAP came out as a majority party in North-West Frontier Province and Balochistan.

Ghaus Bakhsh Bizenjo was elected from the Lyari Town area of Karachi with the help of another notable politician of Pakistan – Mahmoud Haroon.

Mir Gul Khan Nasir was a Senior Minister in this Government and held the portfolios of Education and Health.

[9] Pakistan ran under the remnant of Martial Law LFO (Legal Framework Order) without any proper constitution.

After their release Khair Bakhsh Marri and Sherof Marri decided to opt out of Parliamentary politics while Mir Ghaus Bakhsh, Mir Gul Khan Nasir and Ataullah Mengal joined Wali Khan's National Democratic Party or NDP.

Ghaus Bakhsh Bizenjo as head of Pakistan National Party had also tried to reach the protest meeting to make a speech, but was also arrested.

In 2017, at a public meeting organized on the 28th death anniversary of Ghaus Bakhsh Bizenjo, the then chief minister of Balochistan Sanaullah Zehri criticized the people waging a war against Pakistan and under the cover of Baloch liberation.