This calendar lists key dates relevant to the work of humanitarian disarmament. For more information on these and other disarmament events, see the calendars hosted by the UN Office of Disarmament Affairs and Reaching Critical Will.
2020
| February 4- 7 | Arms Trade Treaty, Working Groups and 1st Informal Preparatory Meeting for the 6th Conference of States Parties (CSP6), Geneva |
| February 10 | Second round of consultations on a political declaration on the use of explosive weapons in populated areas, Geneva |
| February 11-14 | 23rd International Meeting of National Mine Action Programme Directors and United Nations Advisers, Geneva |
| February 14-15 | International Campaign to Abolish Nuclear Weapons (ICAN) Paris Forum, Paris |
| February 26-28 | Campaign to Stop Killer Robots, Global Campaigners Meeting, Buenos Aires |
| March/April | Third round of consultations on a political declaration on the use of explosive weapons in populated areas, Geneva |
| April 4 | International Day for Mine Awareness and Assistance in Mine Action |
| April 14-17 | Arms Trade Treaty, Working Groups and 2nd Informal Preparatory Meeting for CSP6, Geneva |
| April 27-May 22 | Nuclear Non-Proliferation Treaty, Review Conference, New York |
| May (week of May 18) | Mine Ban Treaty, Intersessional Meetings, Geneva |
| June 8 | Convention on Cluster Munitions, 1st Preparatory Meeting for 2nd Review Conference, Geneva |
| June 17 | Convention on Conventional Weapons (CCW) Protocol V on Explosive Remnants of War, Meeting of Experts, Geneva |
| June 18-19 | CCW Amended Protocol II, Group of Experts, Geneva |
| June 22-26 | CCW Group of Governmental Experts on lethal autonomous weapons systems (1st session) Geneva |
| August 1 | 10th anniversary of entry into force of the Convention on Cluster Munitions |
| August 10-14 | CCW Group of Governmental Experts on lethal autonomous weapons systems (2nd session), Geneva |
| August 17- 21 | Arms Trade Treaty, 6th Conference of States Parties, Geneva |
| August 29 | International Day against Nuclear Tests |
| September 4 | Convention on Cluster Munitions, 2nd Preparatory Meeting for 2nd Review Conference, Geneva |
| September 26 | International Day for the Total Elimination of Nuclear Weapons |
| October 5-November 5 | UN General Assembly (UNGA) First Committee on Disarmament and International Security, New York |
| November 9 | CCW Protocol V, 14th Conference of High Contracting Parties, Geneva |
| November 10 | CCW Amended Protocol II, 22nd Conference of High Contracting Parties, Geneva |
| November 11-13 | CCW, Meeting of High Contracting Parties, Geneva |
| November 16-20 | Mine Ban Treaty, 18th Meeting of States Parties, Geneva |
| November 23-27 | Convention on Cluster Munitions, 2nd Review Conference, Lausanne |
| December 1 | Deadline for comment on International Law Commission’s Draft Principles on the Protection of the Environment in Relation to Armed Conflict |