- Video message for the Secretary-General on the occasion of the International Day of Peace
- Secretary-General’s message on the International Day for the Preservation of the Ozone Layer
- Secretary-General’s written message on World Maritime Day 2021: “Seafarers: at the core of shipping’s future”
- Secretary-General’s video message on the UN Day for South-South Cooperation
- Secretary-General’s message on the International Day of Clean Air for Blue Skies
- Secretary-General’s message on the observation of the International Day for People of African Descent
- Secretary-General’s message for the International Day commemorating the Victims of Enforced Disappearances
- Secretary-General’s message on the International Day against Nuclear Tests
- Secretary-General’s message for the International day Commemorating the Victims of Acts of Violence based on Religion or Belief
- Secretary-General’s message on the International Day of Remembrance and Tribute to the Victims of Terrorism
- Secretary-General’s video/written message on World Humanitarian Day
- Secretary-General’s video message on the International Youth Day 2021
