The following lists events that happened during 1955 in Laos.

• Monarch: Sisavang Vong
• Prime Minister: Katay Don Sasorith

• 28 January
  • The Royal Lao Air Force is established as the Lao Air Force.
  • The Royal Lao Navy is established.

• 14 December - Laos is admitted to the United Nations under United Nations Security Council Resolution 109.
• 25 December - 1955 Laotian parliamentary election