The following lists events that happened during 1955 in the Grand Duchy of Luxembourg.
Incumbents
Events
12 January – A law is passed granting amnesty for crimes committed against the state and laxening denazification. 1 March – Paul Thibeau is appointed to the Council of State. 1 March – François Huberty is appointed to the Council of State. 1 March – Roger Maul is appointed to the Council of State. 24 April – The Democratic Party is founded from the Democratic Group. 1 June – Joseph Bech leads a delegation to the three-day Messina Conference on European integration.