About Us
Our Story
COS is Australia’s largest family-owned and operated office and education supplies business, led by second-generation sisters Belinda and Amie Lyone as Co-CEOs.
Founded in 1977 by Dominique Lyone with just two staff members in Western Sydney, COS has grown exponentially over the past 45 years. Today, we have over 600 employees delivering thousands of products to workers, patients, and students across Australia, ensuring their health, safety, and productivity. With warehouses in every state and territory, our reach is truly national.
We take great pride in our commitment to both community and sustainability. Through the dedication of our team and the ongoing support of our customers, COS donates 1% of its annual revenue to the Lyone Foundation. Over the past decade, the Foundation has contributed more than $20 million to local Australian charities, funding meaningful initiatives focused on human welfare.
In 2024 we are working towards achieving our dual goals of net zero operations and 100% renewable electricity across all our facilities nationwide. This milestone underscores our dedication to a sustainable future for our community and the generations to come.
Family owned and operated
COS is the largest 100% Australian owned and operated national office products supplier. The same passion and innovative spirit which Dominique displayed over 45 years ago still remain as core values in the way we do business and support Australian communities.
Family Business Australia
As a member of Family Business Australia, COS has been recognised as a major contributor to the everyday life and future of Australians. Our sustainable business practices allow us to quickly leverage market innovations and opportunities, enabling us to deliver customer service excellence.
