• The Christian Democratic Party is founded.
• The Samudra Raksa Museum is established.
• 2005 Indonesia food scare.

January edit

• The first issue of Shōnen Star is published.

March edit

• March 19 - Jakarta, Indonesia hosted Miss ASEAN pageant for the 2nd time.
• March 28 – 2005 Nias–Simeulue earthquake – The 8.6 M_w  Nias–Simeulue earthquake shakes northern Sumatra with a maximum Mercalli intensity of VI (Strong), leaving 915–1,314 people dead and 340–1,146 injured.

April edit

• April 2 – 2005 Nias Island Sea King crash.

May edit

• May 28 – 2005 Tentena market bombings.

August edit

• August 18 – 2005 Java–Bali blackout.

September edit

• September 5 – Mandala Airlines Flight 091.

October edit

• October 1 – 2005 Bali bombings.
• October 30 – 2005 Indonesian beheadings of Christian girls.

December edit

• December 31 – 2005 Palu market bombing.

• 3 February – Nashwa Zahira, top 5 in Indonesian Idol season 3.
• 14 March – Betrand Peto Putra Onsu, singer.
• 7 June -
  • Ibrahim Khalil Alkatiri, actor.
  • Nizam, actor.
• 18 June – Adyla Rafa Naura Ayu, actress & singer.
• 25 June – Keiko Warman, actor.
• 7 July – Fatih Unru, stand-up comedian & actor.
• 17 July – Calista Amadea, singer.
• 23 July – Deven Christiandi Putra, runner up in Indonesian Idol season 3.
• 24 July – Amanda Putri Julianti, actress.
• 26 September – Rey Bong, actor.
• 28 September – Yudetra Atala Jinan, actor.
• 18 October – Anneth Delliecia, winner in Indonesian Idol season 3.
• 6 December – Yafi Tesa Zahara, actor.
• 25 December – Jefan Nathanio, actor.

• 11 January – Hans Wospakrik, physicist.& lecturer in Bandung Institute of Technology.
• 22 February – Kuntowijoyo, writer and academic.
• 23 February – M. Hasan, former chief of the Indonesian National Police & ambassador.
• 20 March – Astini, serial killer.
• 2 April – Ismail Hasan Metareum, politician.
• 5 April – Z.A. Maulani, former chief of the Indonesian State Intelligence Agency.
• 6 April – Abdul Latief, one of the witnesses to the events of the 30 September Movement in 1965.
• 4 May – Purwoto Gandasubrata, the 8th Chief Justice of the Supreme Court of Indonesia.
• 17 May – Simson Tambunan, former coach & manager of the Indonesian boxer who became Indonesia's first world champion, Ellyas Pical.
• 24 May – Mubyarto, populist economy expert who teaches at Gadjah Mada University.
• 26 May – Radius Prawiro, economist & politician.
• 22 June – Mashudi, former Governor of West Java & Chairman of the Scout Movement.
• 28 June -
  • Saleh Afiff, coordinating Minister for the Economy and Finance of Indonesia in the Development Cabinet VI.
  • Eki Syachrudin, diplomat & ambassador.
• 29 June – Roeslan Abdulgani, politician & United Nations ambassador in the Sukarno government during the 1950s and 1960s.
• 21 July – Otteman III Mahmud Ma'amun, the 13th Sultan of Deli.
• 28 July – Saadillah Mursjid, Minister of State Secretary in the Development Cabinet VII.
• 30 July – Singgih, Attorney General of Indonesia in 1990–1998.
• 6 August -
  • Sumiskum, politician.
  • Andi Abdul Muis, communication science expert and Indonesian press freedom fighter.
• 16 August – Eddy Sud, famous actor in 1960s.
• 27 August – Ruben Gunawan, chess Grandmaster.
• 29 August – Nurcholish Madjid, Islamic thinkers & intellectuals.
• 5 September -
  • Raja Inal Siregar, the 13th Governor of North Sumatra.
  • Tengku Rizal Nurdin, the 14th & 15th Governor of North Sumatra.
• 18 September – Mus K. Wirya, songwriter.
• 9 November – Perry Pattiselanno, jazz musicians.
• 19 December – Jacobus Perviddya Solossa, Governor of Papua in 2000–2005.
• 25 December – Sriwati Masmundari, an artist & famous as damar kurung painter.