This is a list of ambassadors of the United States to Canada.
The ambassador is the head of the Embassy of the United States in Ottawa.

Prior to 1943, the head of the U.S. diplomatic mission to Canada bore the title of Envoy Extraordinary and Minister Plenipotentiary.
The U.S. mission to Canada was upgraded from legation to embassy status in June 1943, and Ray Atherton was the first chief of mission to hold ambassadorial rank.

On July 31, 2019, Kelly Craft was confirmed by the U.S. Senate as the new United States Ambassador to the United Nations.
Aldona Wos, a retired physician and Republican donor from North Carolina, has been nominated as the next ambassador to Canada.
This is a list of ambassadors of the United States to Canada. The ambassador is the head of the Embassy of the United States in Ottawa.
Prior to 1943, the head of the U.S. diplomatic mission to Canada bore the title of Envoy Extraordinary and Minister Plenipotentiary. The U.S. mission to Canada was upgraded from legation to embassy status in June 1943, and Ray Atherton was the first chief of mission to hold ambassadorial rank.
On July 31, 2019, Kelly Craft was confirmed by the U.S. Senate as the new United States Ambassador to the United Nations. Aldona Wos, a retired physician and Republican donor from North Carolina, has been nominated as the next ambassador to Canada.
List of ambassadors of the United States to Canada