1-28 February 2021 National Sustainable Living Festival Sustainable Living Foundation
2 February 2021 World Wetlands Day

World Wetlands Day 2020: Wetlands and Biodiversity

11 February 2021 International Day of Women & Girls in Science Royal Academy of Science International Trust
27 February 2021 dirtgirlworld NOW! – Live Stream dirtgirlworld
2 March 2021 Business Clean-up Day 1800 CUA DAY
5 March 2021 Schools/Youth Clean-up Day 1800 CUA DAY
7 March 2021 Clean Up Australia Day  1800 CUA Day
19 March 2021 Ride2School Day 

Bicycle Network: Ride2School

17-23 March 2021 National Volunteer Week 

Give a little. Change a lot
Volunteering Australia

21 March 2021 World Forestry Day


22 March 2021 World Water Day 

United Nations Water (UN-Water)

23 March 2021 World Meteorological Day 

World Meteorological Organisation 

27 March 2021 Earth Hour 

World Wildlife Fund Earth Hour

18 April 2021 World Heritage Day 

International Council on Monuments and Sites, Australia

2-8 May 2021 International Composting Awareness Week (ICAW) 

Better Soil, Better Life, Better Future
International Compost Awareness Week, Australia

14 May 2021 Walk Safely to School Day  Pedestrian Council of Australia
27 May 2021 National Reconciliation Week 

In This Together
Reconciliation Australia

5 June 2021 World Environment Day

United Nations World Environment Day

8 June 2021 World Oceans Day

World Oceans Day Youth Advisory Council

15 June 2021 Global Wind Day

Wind Europe and Global and Energy Council

1-31 July 2021 Plastic Free July 

Plastic Free Foundation

4-11 July 2021 NAIDOC Week 

Always Was, Always Will Be
National NAIDOC Committee

30 July 2021 Schools Tree Day 

Planet Ark Schools Tree Day

31 July 2021 World Ranger Day 

International Ranger Federation

1 August 2021 National Tree Day 

Planet Ark National Tree Day

16-22 August 2021 Keep Australia Beautiful Week

Keep Australia Beautiful (KAB)

TBA 2021 Record Wombats in Your Local Area


1-30 September 2021 National Biodiversity Month

Biodiversity Month

1-30 September 2021 Save the Koala Month Australian Koala Foundation
3 September 2021 Walk to Work Day Diabetes Australia Walk to Work Day 
5-9 September 2021 Australasian Seed Science Conference Australian Seed Bank Partnership
7 September 2021 National Threatened Species Day  Department of Agriculture, Water and the Environment
7-13 September 2021 National Organic Week 

Centre for Organic Research and Education

12 September 2021 National Bilby Day 

Save the Bilby Fund

16 September 2021 International Day for the Preservation of the Ozone Layer United Nations
20 September 2021 Sustainable House Day

Renew Australia Sustainable House Day

5 October 2021 World Habitat Day 

United Nations World Habitat Day

16 October 2021 National Ride to Work Day

Bicycle Network: Ride2Work

21-27 October 2021 Cool Australia’s Enviroweek

Cool Australia

18-24 October 2021 Aussie Backyard Bird Count Birdlife Australia
1-12 November 2021 COP26 – Glasgow Climate Change Conference United Nations Climate Change
5 November 2021 World Tsunami Awareness Day United Nations
9-15 November 2021 National Recycling Week Planet Ark National Recycling Week
21 November 2021 World Fisheries Day  World Fisheries Day
10 December 2021 International Human Rights Day  United Nations Human Rights
11 December 2021 International Mountain Day

United Nations International Mountain Day

17-19 January 2022 Future Sustainability Summit 

World Future Energy Summit