5 February – SES' Astra 1A satellite starts broadcasting, beginning SES's dominance of the European satellite communication market.
19 April – 150th anniversary of Luxembourg's independence.
6 May – Representing Luxembourg, Park Cafe finish twentieth in the Eurovision Song Contest 1989 with the song Monsieur.
13 June – The constitution is amended in numerous ways, affecting electoral eligibility requirements, expanding education access, and requiring counter-signature of Grand Ducal decree.
18 June – Legislative and European elections are held. The four established parties all lose ground to three new parties: Action Committee 5/6, GAP, and GLEI.
7 July – A law is passed to strengthen the fight against money laundering.
14 July – Jacques Santer forms a new government, keeping Jacques Poos as his deputy.
12 November – The Action Committee 5/6 Pensions for Everyone changes its name to 'Action Committee 5/6'.
6 February – Jean-Pierre Koltz, historian
27 February – Christiane Schlechter-Wirtz, cabaret artist
30 July – Evy Friedrich, film critic
1989 in Luxembourg Wikipedia (Text) CC BY-SA
