About Us
Our Story
COS is Australia’s largest family-owned and operated office and education supplies business, led by second-generation sisters,
Co-CEOs Belinda and Amie Lyone. Founded in 1977 by the late Dominique Lyone, COS began as a small business with a vision for exceptional service and social responsibility.
Over the past 45 years, COS has grown from a small family venture to a national operation with over 600 staff and warehouses in every state and territory. Every day, we deliver thousands of products to workplaces, schools, and hospitals across Australia, helping to keep them healthy, safe, and productive.
As a family-run company, we take pride in supporting local communities and driving sustainability. Through the Lyone Foundation, we donate 1% of annual revenue to Australian charities, contributing over $20 million since 2013 to initiatives focused on human welfare. We are also working toward ambitious sustainability goals, including net zero operations and 100% renewable electricity across all facilities, ensuring a greener future for 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.
