| Connaught Building | |
|---|---|
 Connaught Building front entrance | |
| Location | Ottawa, Ontario, Canada |
| Coordinates | 45°25′35″N 75°41′41″W / 45.42639°N 75.69472°W |
| Built | 1913 |
| Architect | David Ewart |
| Architectural style(s) | Tudor-Gothic |
| Governing body | Public Services and Procurement Canada |
| Designated | 1990 |
The Connaught Building is a historic office building in Ottawa, Ontario, Canada, owned by Public Services and Procurement Canada. It is located at 555 MacKenzie Avenue, just south of the United States Embassy. To the east, the building looks out on the Byward Market, and to the west is MacKenzie Avenue and Major's Hill Park. Today, it houses a portion of Headquarters operations for the Canada Revenue Agency (CRA). The Minister and Commissioner of the CRA have offices in the building.