ATCO
| ATCO Group | |
| Formerly | Alberta Trailer Company |
| Company type | Public |
| TSX: ACO.X (Non-voting) TSX: ACO.Y (Voting) | |
| Industry | Electricity generation and distribution, natural gas, construction, logistics |
| Founded | 1947 |
| Founders | S. Don Southern & Ron Southern |
| Headquarters | Calgary, Alberta, Canada |
Key people | Nancy Southern (CEO) |
Number of employees | 7,500 (2022) |
| Website | www |
ATCO Ltd., operating as the ATCO Group, is a publicly-traded Canadian engineering, logistics and energy holding company based in Calgary, Alberta. ATCO's subsidiaries include electric utilities, natural gas production and distribution companies, and construction companies.