| Date | Org | Activity | City | Contact |
| 6 Apr | UN | Holiday- Eastern Monday | ||
| 6 Apr | UN | International Day of Sport for Development and Peace | ||
| 7 Apr | UN | International Day of Reflection on the 1994 Genocide against the Tutsi in Rwanda | ||
| 9 – 10 Apr | UNECE | Expert Meeting on Statistics for
| Geneva | Jean-Isaias Rodriguez +41 79 444 5081 |
| 12 Apr | UN | International Day of Human Space Flight | ||
13 – 14 Apr
| UNECE | Team of Specialists on Gender-Responsive Standards | Geneva | Jean-Isaias Rodriguez +41 79 444 5081
|
13 – 17 Apr
| UNECE | Working Party on General Safety Provisions | Geneva | Jean-Isaias Rodriguez +41 79 444 5081
|
| 13-17 Apr | WMO | Global Atmosphere Watch 2026 Symposium | Geneva | Clare Nullis +41-79-7091397 |
| 14 Apr | UN | World Chagas Disease Day [WHO]
| ||
| 14-17 Apr | HRC | 5th session of the Permanent Forum on People of African Descent | Geneva | media-humanrightscouncil@un.org |
| 15 Apr | UN | |||
15 – 17 Apr
| UNECE | Working Party on the Standardization of Technical and Safety Requirements in Inland Navigation | Geneva | Jean-Isaias Rodriguez +41 79 444 5081 |
| 15-19 Apr | IPU | 152nd IPU Assembly Istanbul, Türkiye | tf@ipu.org | |
| 20 Apr | UN |
| ||
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