1977 (MCMLXXVII) was a common year starting on Saturday of the Gregorian calendar, the 1977th year of the Common Era (CE) and Anno Domini (AD) designations, the 977th year of the 2nd millennium, the 77th year of the 20th century, and the 8th year of the 1970s decade.

The year 1977 was the 6th year after the independence of Bangladesh. It was also the first year of the Government of Ziaur Rahman. In this year while the new President had to deal with a number of mutiny and overthrow attempts, he also managed to consolidate his power through a referendum, and promoted a nineteen-point political and economic program focusing on population control, food security, education and rural development.^[1]

• President: Abu Sadat Mohammad Sayem (until 21 April), Ziaur Rahman (starting 21 April)
• Vice President: Abdus Sattar (starting June)
• Chief Justice: Syed A. B. Mahmud Hossain

Note: For the year 1977 average official exchange rate for BDT was 15.38 per US$.

• 21 April: Zia replaces Sayem as the President.
• 30 May: Zia wins 98.9 percent of votes in referendum on his continuance as president.^[4]
• 3 June: Supreme Court justice Abdus Sattar becomes vice president.
• 1 September: Formation of Bangladesh Nationalist Party (BNP).
• 28 September: A Japan Airlines Flight 472 en route from Mumbai to Tokyo was hijacked by 5 Japanese Red Army terrorists shortly after takeoff, and forced the plane to land at then Zia International Airport.^[5] The terrorists' demand of $6 million and release of 6 JRA terrorists from Japanese prison was met by the Japanese Prime Minister.^[6] Bangladesh Air Force was deployed to control the situation in the ground and to facilitate negotiations.^[5]
• 30 September: A mutiny breaks out in Bogra.
• 2 October: The mutiny is quelled, but is followed by another failed attempt to overthrow Zia in Dhaka.
• A five-year treaty is signed with India on water sharing.^[7]
• Bangladesh became an Associate member of the International Cricket Council.^[8]

• GMB Akash, photographer
• Mohammad Rakibul Hasan, photographer
• Amin Khan, actor
• Zulfiker Mahmud Mintu, footballer
• Zulfiqer Russell, lyricist

• 13 February: Abdus Salam, editor. (b. 1910)
• 2 May: Mahmuda Khatun Siddiqua, writer. (b. 1906)
• 2 September: Theotonius Amal Ganguly, Archbishop. (b. 1920)
• 24 October: Hatem Ali Khan, politician. (b. 1904)
• 3 November: Muhammad Qudrat-i-Khuda, scientist. (b. 1900)
• 11 November: ARM Inamul Haque, social worker. (b. 1921)

• 1970s in Bangladesh
• List of Bangladeshi films of 1977