About World Microbiome Day

Welcome to World Microbiome Day! Held annually on 27th June, this special day is dedicated to celebrating and raising awareness about the fascinating world of microbiomes.
Microbiomes are communities of microorganisms, including bacteria, fungi, viruses, and other tiny life forms, that live in and around us. They play crucial roles in maintaining the health of humans, animals, plants, and the environment. You might be wondering why microbiomes are so important. Well, these microscopic organisms are involved in processes that are essential for life. For instance, they help us digest food, protect us from harmful pathogens, and even influence our mood and behaviour. In agriculture, microbiomes support plant growth and soil health, while in the environment, they contribute to nutrient cycling and pollution breakdown.
World Microbiome Day aims to make the science of microbiomes accessible to everyone. Whether you’re a student, a parent, or simply curious about the invisible world around you, this day offers a chance to learn and engage with experts through various activities, events, and resources. From interactive workshops and webinars to fun social media campaigns, there’s something for everyone. Join us in celebrating World Microbiome Day and discover how these tiny organisms have a big impact on our lives.
Together, we can appreciate the importance of microbiomes and support research and initiatives that promote their health and diversity. Let’s explore the unseen world and understand how it shapes our future!

Supported by

Sponsorship Opportunities

Support us to celebrate and raise public awareness of the vibrant and diverse world microbes on World Microbiome day!
Since its inception in 2018, World Microbiome Day events have taken place on all continents and reached global audiences online through website and social media channels.
Sponsoring World Microbiome Day gives you the opportunity to target a global audience (from the general public to researchers) and to improve your recognition worldwide.
Sponsorship helps amplify our message to raise awareness of the importance of microbial diversity and through our actions to sustain and increase the diversity of microbes in humans, animals, soils and water throughout our world for the future of our planet.
If you are interested in sponsorship opportunities for World Microbiome Day 2025, please contact Ms. Tina Darb at info@worldmicrobiomeday.com

FAQ

Most frequent questions and answers
World Microbiome Day was launched by APC Microbiome Ireland in 2018, APC Microbiome Ireland is supported by the EU-funded project MicrobiomeSupport and the European Food Information Council (EUFIC).
Microbes are very small organisms such as bacteria, fungi and viruses. A community of microbes is called a microbiome and these can be found in and on humans, animals, and everywhere in the environment.
The theme for World Microbiome Day 2025 is “Microbiome 101: What You Need to Know” ​

How much time do you have to spare?    

5 minutes? Retweet @WMicrobiomeDay tweets or like our @WorldMicrobiomeDay Instagram posts

10 minutes? Test and expand your knowledge by taking the microbiome quizzes.

An afternoon? Sign up for the competition.

More? Organise an event or participate in one close to you

No, any microbiome enthusiast can participate!
Check out the social media kit and download and print the new 2025 logo: here.

Check out the event page and hook on to an event close to you.

Or, even better, create your own microbiome event – get together in the classroom, lab or research group and think about how you and your team can put microbes into the spotlight.

Submit your event dedicated to the microbiome here.

You can tweet and tag @WMicrobiomeDay in your post, using the hashtag #microbiome and retweet a @WorldMicrobiomeDay post onto your own feed. Use the hashtags: #WorldMicrobiomeDay and #Microbes4Life.

No need to worry. Did you organise a microbiome event earlier in the year? Share or reshare the pictures of the event on social media, tagging @WMicrobiomeDay on Twitter or @WorldMicrobiomeDay on Instagram.