Reports submitted by / transmitted by the Secretary-General to the Security Council in 2021
| S/2021/1117 | 4 January 2022 | Situation in Mali |
| S/2021/1110 | 31 December 2021 | United Nations operation in Cyprus |
| S/2021/1109 | 31 December 2021 | Mission of good offices in Cyprus |
| S/2021/1102 | 29 December 2021 | Implementation of paragraph 6 of resolution 1956 (2010) |
| S/2021/1091 | 15 December 2021 | Report on the activities of the United Nations Office for West Africa and the Sahel |
| S/2021/1090 | 27 December 2021 | United Nations Verification Mission in Colombia |
| S/2021/1047 | 15 December 2021 | Implementation of Security Council resolution 2334 (2016) |
| S/2021/1030 | 15 December 2021 | United Nations humanitarian operations in the Syrian Arab Republic |
| S/2021/1029 | 15 December 2021 | Implementation of Security Council resolutions 2139 (2014), 2165 (2014), 2191 (2014), 2258 (2015), 2332 (2016), 2393 (2017), 2401 (2018), 2449 (2018), 2504 (2020), 2533 (2020) and 2585 (2021) |
| S/2021/1022 | 8 December 2021 | Children and armed conflict in Colombia |
| S/2021/1015 | 7 December 2021 | Situation in South Sudan |
| S/2021/1008 | 3 December 2021 | Situation in the Sudan and the activities of the United Nations Integrated Transition Assistance Mission in the Sudan |
| S/2021/994 | 30 November 2021 | United Nations Disengagement Observer Force |
| S/2021/989 | 1 December 2021 | Ninety-eighth monthly report of the Director-General of the Organisation for the Prohibition of Chemical Weapons (OPCW) (Letter) |
| S/2021/987 | 1 December 2021 | United Nations Organization Stabilization Mission in the Democratic Republic of the Congo |
| S/2021/975 | 26 November 2021 | The situation in Central Africa and the activities of the United Nations Regional Office for Central Africa |
| S/2021/953 | 16 November 2021 | Implementation of Security Council resolution 1701 (2006) during the period from 19 June 2021 to 25 October 2021 |
| S/2021/946 | 11 November 2021 | Implementation of resolution 2576 (2021) |
| S/2021/944 | 11 November 2021 | Situation in Somalia |
| S/2021/940 | 11 November 2021 | Joint Force of the Group of Five for the Sahel |
| S/2021/932 | 8 November 2021 | Electoral process in Iraq |
| S/2021/930 | 8 November 2021 | Implementation of paragraph 4 of Security Council resolution 2107 (2013) |
| S/2021/920 | 3 November 2021 | Piracy and armed robbery at sea off the coast of Somalia |
| S/2021/912 | 1 November 2021 | Sixtieth report on the implementation of the Peace Agreement on Bosnia and Herzegovina (letter) |
| S/2021/911 | 1 November 2021 | Ninety-seventh monthly report of the Director General of the Organisation for the Prohibition of Chemical Weapons (OPCW) (Letter) |
| S/2021/890 | 21 October 2021 | Implementation of Security Council resolutions 2139 (2014), 2165 (2014), 2191 (2014), 2258 (2015), 2332 (2016), 2393 (2017), 2401 (2018), 2449 (2018), 2504 (2020), 2533 (2020) and 2585 (2021) |
| S/2021/882 | 15 October 2021 | Children and armed conflict in the Central African Republic |
| S/2021/881 | 15 October 2021 | Abyei |
| S/2021/873 | 14 October 2021 | Implementation of Security Council resolution 1559 (2004) |
| S/2021/867 | 12 October 2021 | Central African Republic |
| S/2021/861 | 8 October 2021 | United Nations Interim Administration Mission in Kosovo |
| S/2021/844 | 1 October 2021 | Mali |
| S/2021/843 | 1 October 2021 | Western Sahara |
| S/2021/842 | 1 October 2021 | Ninety-sixth monthly report of the Director General of the Organisation for the Prohibition of Chemical Weapons (OPCW) (Letter) |
| S/2021/839 | 30 September 2021 | Small arms and light weapons |
| S/2021/836 | 30 September 2021 | Implementation of the Peace, Security and Cooperation Framework for the Democratic Republic of the Congo and the Region |
| S/2021/833 | 28 September 2021 | United Nations Disengagement Observer Force |
| S/2021/828 | 27 September 2021 | United Nations Integrated Office in Haiti |
| S/2021/827 | 27 September 2021 | Women and peace and security |
| S/2021/824 | 24 September 2021 | United Nations Verification Mission in Colombia |
| S/2021/807 | 17 September 2021 | United Nations Organization Stabilization Mission in the Democratic Republic of the Congo |
| S/2021/784 | 9 September 2021 | South Sudan |
| S/2021/767 | 2 September 2021 | Implementation of resolution 2546 (2020) |
| S/2021/766 | 1 September 2021 | Situation in the Sudan and the activities of the United Nations Integrated Transition Assistance Mission in the Sudan |
| S/2021/764 | 31 August 2021 | Ninety-fifth monthly report of the Director-General of the Organisation for the Prohibition of Chemical Weapons (OPCW) (Letter) |
| S/2021/763 | 30 August 2021 | Strengthening the partnership between the United Nations and the African Union on issues of peace and security in Africa, including on the work of the United Nations Office to the African Union |
| S/2021/761 | 27 August 2021 | Children and armed conflict in Yemen |
| S/2021/759 | 2 September 2021 | The situation in Afghanistan and its implications for international peace and security |
| S/2021/752 | 25 August 2021 | United Nations Support Mission in Libya |
| S/2021/749 | 24 August 2021 | Peaceful settlement of the question of Palestine |
| S/2021/735 | 18 August 2021 | Implementation of Security Council resolutions 2139 (2014), 2165 (2014), 2191 (2014), 2258 (2015), 2332 (2016), 2393 (2017), 2401 (2018), 2449 (2018), 2504 (2020), 2533 (2020), and 2585 (2021) |
| S/2021/723 | 10 August 2021 | Somalia |
| S/2021/700 | 3 August 2021 | Implementation of resolution 2576 (2021) |
| S/2021/696 | 31 July 2021 | Review of the situation in Darfur and benchmarks to assess the measures on Darfur |
| S/2021/689 | 28 July 2021 |
Thirty-first report pursuant to paragraph 4 of Security Council resolution 2107 (2013) |
| S/2021/682 | 27 July 2021 | Thirteenth report of the Secretary-General on the threat posed by ISIL (Da’esh) to international peace and security and the range of United Nations efforts in support of Member States in countering the threat |
| S/2021/662 | July 2021 | Children and armed conflict in Afghanistan |
| S/2021/657 | 16 July 2021 | Adaptation and authorized strength of the United Nations Multidimensional Integrated Stabilization Mission in Mali |
| S/2021/650 | 13 July 2021 | Implementation of Security Council resolution 1701 (2006) during the period from 20 February to 18 June 2021 |
| S/2021/635 | 9 July 2021 | United Nations operation in Cyprus |
| S/2021/634 | 9 July 2021 | Mission of good offices in Cyprus |
| S/2021/615 | 30 June 2021 | Ninety-third monthly report of the Director General of the Organisation for the Prohibition of Chemical Weapons (OPCW) (Letter) |
| S/2021/612 | 28 June 2021 | Report on the activities of the United Nations Office for West Africa and the Sahel |
| S/2021/603 | 25 June 2021 | United Nations Verification Mission in Colombia |
| S/2021/596 | 24 June 2021 | Implementation of paragraph 6 of resolution 1956 (2010) |
| S/2021/587 | 21 June 2021 | United Nations Organization Stabilization Mission in the Democratic Republic of the Congo |
| S/2021/584 | 18 June 2021 | Implementation of Security Council resolution 2334 (2016) |
| S/2021/583 | 17 June 2021 | Implementation of Security Council resolutions 2139 (2014), 2165 (2014), 2191 (2014), 2258 (2015), 2332 (2016), 2393 (2017), 2401 (2018), 2449 (2018), 2504 (2020) and 2533 (2020) |
| S/2021/582 | 30 June 2021 | Implementation of Security Council resolution 2231 (2015) |
| S/2021/571 | 16 June 2021 | Central African Republic |
| S/2021/570 | 15 June 2021 | The situation in Afghanistan and its implications for international peace and security |
| S/2021/566 | 14 June 2021 | South Sudan |
| S/2021/562 | 11 June 2021 | Promotion of durable peace and sustainable development in Africa |
| S/2021/559 | 11 June 2021 | United Nations Integrated Office in Haiti |
| S/2021/519 | 1 June 2021 | Mali |
| S/2021/517 | 1 June 2021 | The situation in Central Africa and the activities of the United Nations Regional Office for Central Africa |
| S/2021/516 | 3 June 2021 | United Nations Disengagement Observer Force |
| S/2021/514 | 28 May 2021 | Ninety-second monthly report of the Director General of the Organisation for the Prohibition of Chemical Weapons (OPCW) (Letter) |
| S/2021/485 | 19 May 2021 | Situation in Somalia |
| S/2021/470 | 17 May 2021 | Situation in the Sudan and the activities of the United Nations Integrated Transition Assistance Mission in Sudan |
| S/2021/451 | 11 May 2021 | United Nations Support Mission in Libya |
| S/2021/442 | 10 May 2021 | Joint Force of the Group of Five for the Sahel |
| S/2021/437 | 6 May 2021 | Children and armed conflict |
| S/2021/434 | 5 May 2021 | Implementation of Security Council resolution 2526 (2020) |
| S/2021/426 | 4 May 2021 | Implementation of resolution 2522 (2020) |
| S/2021/424 | 3 May 2021 | Advancing atrocity prevention: work of the Office on Genocide Prevention and the Responsibility to Protect |
| S/2021/422 | 3 May 2021 | Ninety-first monthly report of the Director General of the Organisation for the Prohibition of Chemical Weapons (OPCW) (Letter) |
| S/2021/409 | 26 April 2021 | Fifty-ninth report on the implementation of the Peace Agreement on Bosnia and Herzegovina (letter) |
| S/2021/396 | 22 April 2021 | Implementation of Security Council resolution 1559 (2004) |
| S/2021/395 | 22 April 2021 | Implementation of paragraph 4 of Security Council resolution 2107 (2013) |
| S/2021/390 | 22 April 2021 | Implementation of Security Council resolutions 2139 (2014), 2165 (2014), 2191 (2014), 2258 (2015), 2332 (2016), 2393 (2017), 2401 (2018), 2449 (2018), 2504 (2020) and 2533 (2020) |
| S/2021/383 | 20 April 2021 | Situation in Abyei |
| S/2021/332 | 5 April 2021 | United Nations Interim Administration Mission in Kosovo |
| S/2021/312 | 30 March 2021 | Conflict-related sexual violence |
| S/2021/306 | 30 March 2021 | Implementation of the Peace, Security and Cooperation Framework for the Democratic Republic of the Congo and the Region |
| S/2021/299 | 26 March 2021 | Situation in Mali |
| S/2021/298 | 26 March 2021 | United Nations Verification Mission in Colombia |
| S/2021/282 | 22 March 2021 | United Nations Disengagement Observer Force |
| S/2021/274 | 18 March 2021 | United Nations Organization Stabilization Mission in the Democratic Republic of the Congo |
| S/2021/252 | 12 March 2021 | The situation in Afghanistan and its implications for international peace and security |
| S/2021/240 | 9 March 2021 | Implementation of Security Council resolution 1701 (2006) during the period from 21 October 2020 to 19 February 2021 |
| S/2021/228 | 5 March 2021 | Report to the United Nations on Kosovo Force operations (Letter) |
| S/2021/199 | 1 March 2021 | Situation in the Sudan and the activities of the United Nations Integrated Transition Assistance Mission in the Sudan |
| S/2021/172 | 23 February 2021 | Situation in South Sudan |
| S/2021/160 | 18 February 2021 | Implementation of Security Council resolutions 2139 (2014), 2165 (2014), 2191 (2014), 2258 (2015), 2332 (2016), 2393 (2017), 2401 (2018), 2449 (2018), 2504 (2020) and 2533 (2020) |
| S/2021/154 | 17 February 2021 | Situation in Somalia |
| S/2021/146 | 16 February 2021 | Central African Republic |
| S/2021/133 | 11 February 2021 | United Nations Integrated Office in Haiti |
| S/2021/120 | 8 February 2021 | Implementation of resolution 2522 (2020) |
| S/2021/98 | 29 January 2021 | Twelfth report of the Secretary-General on the threat posed by ISIL (Da’esh) to international peace and security and the range of United Nations efforts in support of Member States in countering the threat |
| S/2021/93 | 28 January 2021 | Implementation of paragraph 4 of Security Council resolution 2107 (2013) |
| S/2021/62 | 19 January 2021 | United Nations Support Mission in Libya |
| S/2021/17 | 6 January 2021 | Implementation of paragraph 6 of resolution 1956 (2010) |
| S/2021/5 | 8 January 2021 | Report on his mission of good offices in Cyprus |
| S/2021/4 | 8 January 2021 | United Nations operation in Cyprus |