COS | Complete Office Supplies

About COS | Complete Office Supplies

COS is Australia’s largest family-owned and operated workplace and education supplies business, led by second-generation sisters, Co-CEOs Belinda and Amie Lyone. Founded in 1977 by the late Dominique Lyone, COS has grown to a national operation with over 700 staff and warehouses in every state and territory. Every day, COS delivers thousands of products to workplaces and schools across Australia, helping to keep them productive, healthy and safe. Reaching Net Zero Operations and 100% Renewable Electricity across all facilities nationwide in 2024 was a significant milestone, with both achievements maintained throughout 2025. Our focus is now on decarbonisation, expanding our emissions measurement with a focus on Scope 3 emissions. Internal working groups are embedded across the business, each focused on a specific emissions category and working towards meaningful reductions across key areas including customer deliveries, staff travel, energy, waste and product production. Each year, COS also donates 1% of annual revenue to the Lyone Foundation, supporting local Australian charities focused on human welfare. Since 2013, COS has contributed more than $26 million to the Foundation and helped more than 150 life-changing charities.