May

• 30 May: Zia wins 98.9 percent of votes in referendum on his continuance as president.
• 3 June: Supreme Court justice Abdus Sattar becomes vice president.

September

• 1 September: Formation of Bangladesh Nationalist Party
  Bangladesh Nationalist Party
  The Bangladesh Nationalist Party , commonly referred to as the BNP, is the mainstream center-right political party in Bangladesh. BNP ruled Bangladesh total 18 years since her independence, the longest than any other party in Bangladesh...
  
  (BNP).
• 28 September: Japanese Red Army
  Japanese Red Army
  The was a Communist terrorist group founded by Fusako Shigenobu early in 1971 in Lebanon. It sometimes called itself Arab-JRA after the Lod airport massacre...
  
  , a terrorist group forces a hijacked Japan Airlines Flight
  Japan Airlines Flight 472
  Japan Airlines Flight 472 was an aircraft hijacking carried out by the Japanese Red Army on September 28, 1977.-Incident:The Douglas DC-8, en route from Paris to Haneda Airport in Tokyo with 156 people on board, stopped in Mumbai, India...
  
   to land in Dhaka.
• 30 September: A mutiny breaks out in Bogra.

October

• 2 October: The mutiny is quelled, but is followed by another failed attempt to overthrow Zia in Dhaka.

Undated events

• Bangladesh became an Associate member of the International Cricket Council
  International Cricket Council
  The International Cricket Council is the international governing body of cricket. It was founded as the Imperial Cricket Conference in 1909 by representatives from England, Australia and South Africa, renamed the International Cricket Conference in 1965, and took up its current name in 1989.The...
  
  .