Secretary-General's Reports Submitted to the Security Council in 1999
| S/1999/1302 | 31 December 1999 | United Nations of Observers in Prevlaka |
| S/1999/1276 | 23 December 1999 | Developments in Guinea-Bissau and activities of the United Nations Peacebuilding Support in that country |
| S/1999/1260 | 17 December 1999 | United Nations Mission in Bosnia and Herzegovina |
| S/1999/1250 | 23 December 1999 | United Nations Interim Administration Mission in Kosovo |
| S/1999/1223 | 6 December 1999 | United Nations in Sierra Leone (first report) |
| S/1999/1219 | 6 December 1999 | Western Sahara |
| S/1999/1203 S/1999/1203/Add.1 |
29 November 1999 | United Nations Operation in Cyprus |
| S/1999/1003 | 28 September 1999 | United Nations Observers Mission in Sierra Leone (eighth report) |
| S/1999/994 | 21 September 1999 | Afghanistan |
| S/1999/989 | 17 September 1999 | United Nations in Bosnia and Herzegovina |
| S/1999/987 | 16 September 1999 | United Nations Interim Administration Mission in Kosovo |
| S/1999/957 | 8 September 1999 | Protection of civilians in armed conflicts |
| S/1999/862 | 9 August 1999 | East Timor |
| S/1999/836 | 30 July 1999 | United Nations Observer Mission in Sierra Leone (seventh report) |
| S/1999/807 | 21 July 1999 | United Nations Interim Force in Lebanon |
| S/1999/805 | 20 July 1999 | Abkhazia, Georgia |
| S/1999/803 | 20 July 1999 | East Timor |
| S/1999/790 | 15 July 1999 | United Nations Preliminary Deployment in the Democratic Republic of the Congo |
| S/1999/788 | 15 July 1999 | United Nations Mission in the Central African Republic (seventh report) |
| S/1999/779 | 12 July 1999 | United Nations Interim Administration Mission in Kosovo |
| S/1999/764 | 8 July 1999 | United Nations Mission of Observers in Prevlaka |
| S/1999/741 | 1 July 1999 | Report pursuant to Security Council resolution 1233 (1999) relative to the situation in Guinea-Bissau |
| S/1999/726 | 30 June 1999 | Report pursuant to paragraph 16 of Security Council resolution 883 (1993) and paragraph 8 of resolution 1192 (1998) |
| S/1999/721 | 25 June 1999 | Western Sahara |
| S/1999/707 | 22 June 1999 | Secretary-General's mission of good offices in Cyprus |
| S/1999/705 | 22 June 1999 | East Timor |
| S/1999/672 | 12 June 1999 | Report pursuant to paragraph 10 of Security Council resolution 1244 (1999) |
| S/1999/670 | 11 June 1999 | United Nations Mission in Bosnia and Herzegovina |
| S/1999/698 | 20 June 1999 | Afghanistan |
| S/1999/657 | 8 June 1999 | United Nations Operation in Cyprus |
| S/1999/645 | 4 June 1999 | United Nations Observation Mission in Sierra Leone (sixth report) |
| S/1999/621 | 28 May 1999 | United Nations Mission in the Central African Republic (sixth report) |
| S/1999/595 | 22 May 1999 | East Timor |
| S/1999/579 | 18 May 1999 | United Nations Civilian Police Mission in Haiti |
| S/1999/575 | 18 May 1999 | United Nations Disengagement Observer Force |
| S/1999/573 | 12 May 1999 | Report pursuant to paragraph 6 of Security Council resolution 1210 (1998) |
| S/1999/514 | 6 May 1999 | Tajikistan |
| S/1999/513 | 5 May 1999 | East Timor |
| S/1999/416 | 14 April 1999 | United Nations Mission in the Central African Republic (fifth report) |
| S/1999/404 | 9 April 1999 | United Nations Mission of Observers in Prevlaka |
| S/1999/362 | 31 March 1999 | The situation in Afghanistan and its implications for international peace and security |
| S/1999/361 | 30 March 1999 | Standby arrangements for peacekeeping (progress report) |
| S/1999/330 | 25 March 1999 | United Nations Iraq-Kuwait Observation Mission |
| S/1999/307 | 22 March 1999 | Western Sahara |
| S/1999/294 | 17 March 1999 | Report pursuant to Security Council resolution 1216 (1998) relative to the situation in Guinea-Bissau |
| S/1999/293 | 17 March 1999 | Report pursuant to resolutions 1160 (1998), 1199 (1998) and 1203 (1998) of the Security Council |
| S/1999/284 | 16 March 1999 | United Nations Mission in Bosnia and Herzegovina |
| S/1999/237 | 4 March 1999 | United Nations Observer Mission in Sierra Leone (fifth report) |
| S/1999/202 | 24 February 1999 | United Nations Observation Mission in Angola (MONUA) |
| S/1999/187 | 22 February 1999 | Report pursuant to paragraph 6 of Security Council resolution 1210 (1998) |
| S/1999/181 | 19 February 1999 | United Nations Civilian Police Mission in Haiti |
| S/1999/171 | 12 February 1999 | Enhancement of African peacekeeping capacity |
| S/1999/161 | 12 February 1999 | United Nations Preventive Deployment Force pursuant to Security Council resolution 1186 (1998) |
| S/1999/124 | 8 February 1999 | Tajikistan (interim report) |
| S/1999/99 | 30 January 1999 | Report pursuant to resolutions 1160 (1998), 1199 (1998) and 1203 (1998) of the Security Council |
| S/1999/98 | 29 January 1999 | United Nations Mission in the Central African Republic (fourth report) |
| S/1999/88 | 28 January 1999 | Western Sahara |
| S/1999/61 | 19 January 1999 | United Nations Interim Force in Lebanon |
| S/1999/60 | 20 January 1999 | Abkhazia, Georgia |
| S/1999/49 | 17 January 1999 | United Nations Observers Mission in Angola |
| S/1999/20 | 7 January 1999 | United Nations Mission of Observers in Sierra Leone (special report) |
| S/1999/16 | 6 January 1999 | United Nations Mission of Observers in Prevlaka |