| January 22 | Fifth Anniversary of Treaty on the Prohibition of Nuclear Weapons (TPNW) Entry into Force |
| March 2–6 | Convention on Certain Conventional Weapons (CCW), First Session of the Group of Governmental Experts on Lethal Autonomous Weapons Systems, Geneva |
| March 16–19 | Arms Trade Treaty (ATT), Working Group Meetings, Geneva |
| March 30 | Convention on Cluster Munitions, First Preparatory Meeting for Third Review Conference, Geneva |
| April 4 | International Day for Mine Awareness and Assistance in Mine Action |
| April 27– May 22 | Treaty on the Non-Proliferation of Nuclear Weapons (NPT), 11th Review Conference, New York |
| May 26–27 | ATT, Informal Preparatory Meeting for the 12th Meeting of States Parties, Geneva |
| June 15-18 | Mine Ban Treaty, Intersessional Meeting, Geneva |
| July 1 | Convention on Cluster Munitions, Second Preparatory Meeting of the Third Review Conference, Geneva |
| August 24–28 | ATT, 12th Meeting of States Parties, Geneva |
| August 29 | International Day against Nuclear Tests |
| August 31–September 4 | CCW, Second Session of the Group of Governmental Experts on Lethal Autonomous Weapons Systems, Geneva |
| September 14–18 | Convention on Cluster Munitions, Third Review Conference, Vientiane, Laos |
| September 7–9 | CCW, Preparatory Committee of the Seventh Review Conference, Geneva |
| October– November | UN General Assembly, First Committee on Disarmament and International Security, New York |
| November 9 | CCW, Protocol V Meeting of Experts, Geneva |
| November 10–11 | CCW, Amended Protocol II Group of Experts, Geneva |
| November 12 | CCW, 20th Protocol V Annual Conference, Geneva |
| November 13 | CCW, 28th Amended Protocol II Annual Conference, Geneva |
| November 16–20 | CCW, Seventh Review Conference, Geneva |
| November 30–December 4 | Mine Ban Treaty, 23rd Meeting of States Parties, Geneva |
| November 30–December 4 | Treaty on the Prohibition of Nuclear Weapons, First Review Conference, New York |
This calendar lists key dates relevant to the work of humanitarian disarmament.
For more information on these and other disarmament events, check the calendars maintained by Reaching Critical Will and the UN Office of Disarmament Affairs.