| March 01 | Zero Discrimination Day | Remove laws that harm, create laws that empower |
| March 03 | World Wildlife Day | Recovering key species for ecosystem restoration |
| March 03 | World Hearing Day | To hear for life, listen with care |
| March 04 | World Obesity Day | Everybody Needs to Act’ |
| March 08 | International Women’s Day | Gender equality today for a sustainable tomorrow |
| March 09 (Second Wednesday of March) | No Smoking Day 2022 | Quitting smoking doesn’t have to be stressful |
| March 10 (the Second Thursday in March) | World Kidney Day 2022 | Kidney Health for All: Bridge the knowledge gap to better kidney care |
| March 10 | International Day of Women Judges | |
| March 13 | World Rotaract Day | Rotary Making a Difference |
| March 14 | International Day of Mathematics | Mathematics Unites! |
| March 14 | International Day of Action for Rivers | The Importance of Rivers for Biodiversity |
| March 15 | International Day to Combat Islamophobia | On 15 March 2022, the United Nations General Assembly (UNGA) unanimously adopted the resolution brought forward by Pakistan to establish this day as the “International Day to Combat Islamophobia”. The choice of date was significant after 51 people were killed during a terror attack carried out at two mosques in Christchurch, New Zealand, on 15 March 2019. |
| March 18 | Global Recycling Day | Recycling Fraternity |
| March 20 | International Day of Happiness | Build Back Happier |
| March 20 | World Sparrow Day | LOVE Sparrows |
| March 20 | World Frog Day | |
| March 20 | UN French Language Day | |
| March 20 | World Day of Theatre for Children and Young People | |
| March 20 | World Oral Health Day | Be Proud Of Your Mouth |
| March 20 | World Head Injury Awareness Day | |
| March 21 | International Day of Forests | Forests and sustainable production and consumption |
| March 21 | World Down Syndrome Day | We Decide |
| March 21 | World Poetry Day | |
| March 21 | International Day for the Elimination of Racial Discrimination | Voices for action against racism |
| March 21 | World Puppetry Day | |
| March 22 | World Water Day | Groundwater, Making the Invisible Visible |
| March 23 | World Meteorological Day | Early Warning and Early Action |
| March 24 | World Tuberculosis Day | Invest to End TB. Save Lives |
| March 24 | International Day for the Right to the Truth concerning Gross Human Rights Violations and for the Dignity of Victims | |
| March 25 | International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade | Stories of Courage: Resistance to Slavery and Unity against Racism |
| March 25 | International Day of Solidarity with Detained and Missing Staff Members | |
| March 26 (Last Saturday of the March) | Earth Hour | Climate Change to Save Earth |
| March 27 | World Theatre Day | Theatre and a Culture of Peace |
| March 31 | International Transgender Day of Visibility | |
| March 31 | World Backup Day | |
| March 31 | International Drug Checking Day | |
