June 1
- World Reef Awareness Day
- World Narcissistic Abuse Awareness Day
- Global Day of Parents
- World Milk Day
- International Tabletop Day – Changes Annually
June 2
June 3
- World Bicycle Day
- Chimborazo Day
- World Clubfoot Day
- National Fish and Chips Day – First Friday in June
June 4
June 5
- World Environment Day
- International Day for the Fight Against Illegal, Unreported and Unregulated Fishing
June 6
June 7
June 8
June 9
June 10
June 11
- International Young Eagles Day – Second Saturday in June
- World Doll Day – Second Saturday in June
- World Gin Day – Second Saturday in June
- World Wide Knit in Public Day – Second Saturday in June
June 12
June 13
June 14
- International Bath Day
- World Blood Donor Day
- World Pet Memorial Day – Second Tuesday in June
June 15
June 16
- Bloomsday
- International Day of Family Remittances
- World Tapas Day – Third Thursday in June
June 17
June 18
- World Sustainable Gastronomy Day
- Autistic Pride Day
- International Panic Day
- International Sushi Day
- International Picnic Day
June 19
- World Martini Day
- World Sauntering Day
- World Sickle Cell Day
- International Day for the Elimination of Sexual Violence in Conflict
June 20
- International Surfing Day
- International Nystagmus Day
- International T-Shirt Day – First Day of Summer
- World Productivity Day
- World Refugee Day
- World Juggling Day – Saturday Closest to June 17
June 21
- International Day of Yoga
- Make Music Day
- World Giraffe Day
- World Humanist Day
- World Peace and Prayer Day
June 22
June 23
June 24
- International Fairy Day
- World UFO Day
- National Cream Tea Day – Last Friday in June
June 25
- Day of the Seafarer
- Global Beatles Day
- World Vitiligo Day
- International Ragweed Day – Fourth Saturday in June
June 26
- Global Smurf Day – Saturday Closest to June 25
- International Day in Support of Victims of Torture
- International Day Against Drug Abuse and Illicit Trafficking
June 27
June 28
June 29
June 30
