Events in the year 1955 in Germany.

• President – Theodor Heuss
• Chancellor – Konrad Adenauer

• 15 May - Rhineland-Palatinate state election, 1955
• 24 June - 5 July - 5th Berlin International Film Festival
• 2 July - Tierpark Berlin opened.
• 15 July - 18 September - documenta 1 in Kassel
• 11 August - 1955 Altensteig mid-air collision
• 20 September - Treaty on Relations between the USSR and the GDR

• 4 January - Wolfgang Tiefensee, German politician
• 10 January
  • Volker Mosblech, German politician (d. 2024)
  • Michael Schenker, German guitarist, songwriter and producer
• 14 January - Jan Fedder, German actor (died 2019)
• 16 January - Martin Roth, German museum director (died 2017)
• 18 January - Gerburg Jahnke, German comedian
• 25 January - Petra Gerster, German journalist
• 1 February
  • Hans Werner Olm, German comedian
  • Christian, Duke of Oldenburg, head of the Grand Ducal Family of Oldenburg
• 10 February - Bernd Martin, German football player (died 2018)
• 6 March - Friedbert Pflüger, German politician
• 8 March - Thomas Bellut, German journalist
• 11 March - Nina Hagen, German musician
• 21 March - Bärbel Wöckel, German sprinter
• 26 March - Verena Butalikakis, German politician (died 2018)
• 13 April - Ole von Beust, German politician
• 29 April - Klaus Siebert, German biathlete (died 2016)
• 15 May - Claudia Roth, German politician
• 15 May - Alexander Pusch, German fencer
• 26 May - Doris Dörrie, German film director
• 2 June - Heiko von der Leyen, German physician
• 10 June - Annette Schavan, German politician
• 11 June - Marie Gruber, German actress
• 25 June - Martin Petzold, German opera singer (died 2023)
• 1 July - Rosemarie Wenner, German Methodist bishop
• 29 July - Christian Tramitz, German actor, comedian, voice actor and author
• 9 August - Udo Beyer, German track and field athlete
• 15 August - Roger Willemsen, German author, essayist and TV presenter (died 2016)
• 20 August - Helge Schneider, German comedian, jazz musician and multi-instrumentalist, author, film and theatre director, and actor
• 25 August - Gerd Müller, German politician
• 2 September - Claus Kleber, German journalist
• 14 September - Wilhelm Huxhorn, German footballer (died 2010)
• 20 September
  • Georg Christoph Biller, German choral conductor (died 2022)
  • Lilo Wanders, German transvestite entertainer, comedian and theatre/television host
• 22 September - Karl-Heinz Rummenigge, German football player and trainer
• 25 September - Peter Müller, German politician
• 25 September - Richy Müller, German actor
• 30 September - Andy Bechtolsheim, German businessman
• 11 October - Hans-Peter Briegel, German footballer
• 25 October - Peter Nocke, German swimmer
• 10 November - Roland Emmerich, German film director, screenwriter, and producer
• 8 December - Martin Semmelrogge, German actor
• 15 December - Renate Künast, German politician
• 22 December - Thomas C. Südhof, German biochemist
• 31 December - Gregor Braun, German cyclist