Dhirendranath Datta (Bengali pronunciation: [Dhirendronath Dôtto]; 2 November 1886 – disappeared 29 March 1971) was a Bengali lawyer by profession who was also active in the politics of undivided Bengal in pre-partition India, and later in East Pakistan (1947–1971) Along with many politically active Bengalis of his time, Datta took a firm stand following the Bengal Partition of 1905. He chose to oppose partition, working closely with other anti-partition activists such as Surendranath Banerjee and Rabindranath Tagore. Datta joined the Indian National Congress from Mymensingh District and was first elected to the Bengal Legislative Council in 1937. He was arrested by the British rulers of India for his participation in the Quit India movement of 1942.
Datta firmly opposed the creation of Pakistan and partition of India on religious lines; but when it became clear that partition of Bengal was inevitable and that his home district of Comilla would be in the new Muslim majority