Lawyer and Politician.

His father, Jogobondhu Datta, was the Serestadar of Cosba Court.

He passed the Entrance from the Nabinagar English High School in 1904. He received the F.A. degree from Comilla Victoria College in 1906, and B.A. from Calcutta Ripon College in 1908.

While still a student, he married Surbala (1906), daughter of prominent lawyer, Krishna Komol Dash.

He passed law exams in 1910. From March 1, 1910 to January 2, 1911, he was the Assistant Headmaster of the Comilla Bandara English High School.

He started practicing law in 1911.

His political carrer started with the participation in the anti-Bongo Vongho(Partition of Bangla) movement in 1905. In 1919, he participated in the Congress Party state convention.

In 1921, he establised an organization called, Mukti Songha, in Comilla. He abondoned law practices (1920 - 1922) for a while to participate in the Non-Cooperation Movement, and was appointed the director of the Brahmin Baria Volunteer corps.

He was one of the founder of the "Avay Ashram" in Comilla (1923). In 1929, he temporarily abondoned his law practices to support the decision of the Lahore Resolution of the Congress to initiate all-India law breaking movement. He was arrested for breaking the law in July 2, 1930. He was released under terms in February 2, 1931.

In 1937, he was elected as a member of the Bengal National Assembly as a Congress nominee.

In December 14 1940, as he spoke against the war, he was instantly arrested, and was sent to the Brahmin Baria sub-jail. He was prosecuted without representation inside the jail, and was sentenced to 9 months in prison. He was released after serving terms in Comilla, Domdom, and Alipur Central Jail.

He was arrested again during the Quit-India Movement of 1942. He was released in 1943.

In June 1945, during the budget discussion in the Bengal National Assembly, he brought a change proposal that was accepted with majority vote, hence bringing down the Najimuddin cabinet. This is a memorable incident in Bengal history.

In 1946, he became the member of the Bengal National Assembly as a Congress nominee. After the partition of 1947, he became a member of the Pakistan National Assembly.

In February 23, 1948, English and Urdu was mandated to be the langauge of the parlaiment. It was also mandated that only those two languages can be used in the Assembly. Direndra Nath was the first to oppose such measures, and brought proposal to add Bangla as another language of the parlaiment. His proposal was declined. Afterwards, the Langauge Movement was intiated to make Bangla as oen of the national languages of Pakistan. In the history of Bangla, Direndra Nath is regarded as a fore-runner of the Language Movement.

In 1954, he was elected as a member of the East Bengal natioanl assembly. He also found a new political party called, Gono Somiti.

He was the Minister of Medical, Public Health and Social Welfare in the Ataur Rahman cabinet formed in Sepetember 6, 1956 (September 1956 - October 1958).

He faced the 'ABDO' law of the military government of Ayub Khan in 1960.

In 1960, He was elected the President of the Lawyers Association. Same year in December, he was arrested under East Pakistan Public Safety Ordiance. He was imprisoned without a trial until March 10, 1965.

Afterwards, he was never involved in active politics, however, he was a patron of the progressive, secular, and Bangalee nationalist politics.

Death: During the emergence of the Bangladesh Liberation war against Pakistan in 1971, he was picked up by the Pakistani military in March 27 from his apartment, and was taken to the Moynamoti cantonment. He is lost since.