The King of Bhutan was the first world leader to announce official recognition of Bangladesh's independence on 6 December 1971.

Bhutan's upper house of parliament has voted to not ratify a regional transport pact involving India, Nepal and Bangladesh.

During the 13th century, an Islamic invasion of Tibet was launched from Bengal which may have crossed Bhutan near the Chumbi Valley.

[6] On 6 December 1971, in one of its first assertive acts in foreign policy, Bhutan announced its recognition of East Pakistan as an independent Bangladesh.

We are confident that the great and heroic struggle of the people of Bangladesh to achieve freedom from foreign domination will be crowned with success in the close future.

My people and myself pray for the safety of your great leader Sheikh Mujibur Rahman and we hope that God will deliver him safely from the present peril so that he can lead your country and people in the great task of national reconstruction and progress.

[2] In 1985, Bhutan attended the inaugural summit of the South Asian Association for Regional Cooperation (SAARC) in Dhaka.

[9] The Queen Mother of Bhutan visited Bangladesh in 2016 during which she toured facilities of BRAC and pharmaceutical, textile and ceramic companies.

[14] Plans include a joint Indo-Bangladeshi investment of US$1.25 billion for Bhutan's 1,125-MW Dorjilung hydropower plant.