18 January – Lucien Kraus is appointed to the Council of State.
3 April – Luxembourg adopts Central European Summer Time regularly for the first time.
7 May – Representing Luxembourg, Anne-Marie Besse finishes sixteenth in the Eurovision Song Contest 1977 with the song Frère Jacques.
3 June – The Sidor waste-to-energy incinerator at Leudelange is inaugurated.
12 June – The Netherlands' Bert Pronk wins the 1977 Tour de Luxembourg.
22 June – The government abandons plan to build a nuclear power plant at Remerschen, due to fears that the country wouldn't have enough police to protect the site from protestors.
29 July – Cornel Meder is appointed to the Council of State.
2 August – A law creating the Societé nationale de Crédit et d'Investissement is passed.
16 September – Marcel Mart leaves the government to join the European Court of Auditors, and is replaced by Josy Barthel.
At the conference of the International Telecommunication Union, in Geneva, Luxembourg is assigned five frequencies for satellite broadcasting, furthering the government's move towards making Luxembourg a leader in satellite telecommunications.
Jeunesse Esch wins the 1976-77 National Division title.
20 August – Stéphane Gillet, footballer
5 November – Christian Poos, cyclist
25 November - Max Jacoby, filmmaker
26 July – Prince Charles of Luxembourg
20 October – Tun Deutsch, actor
13 November – Jean-Pierre Erpelding, writer
1977 in Luxembourg Wikipedia (Text) CC BY-SA
