A Foreign Affairs spokeswoman says the embassy is a close neighbour of the American mission, which has been the focus of angry protests by mobs.
Canada shut down the embassy for the day out of concern for the safety of staff, she says.
All personnel are safe and accounted for.
Given that the normal Egyptian weekend is Friday-Saturday, the embassy is expected to be open for business on Sunday.
The Egyptian government has promised to protect foreign embassies in Cairo, where police have used tear gas on mobs outside the U.S. mission.