Government Sites
U.S. Department of State – Official list of embassies from the U.S. Department of State.
U.K Government – British embassies and consulates worldwide.
Foreign Affairs and International Trade Canada – Canadian offices abroad.
Australian Government – Australian embassies and consulates overseas.
Independent Sites
Embassies and Consulates Around the World – GoAbroad.com – Search for a specific embassy/consulate in a country.