List of ambassadors of the United States to Portugal
| Ambassador of the United States to Portugal | |
|---|---|
Seal of the United States Department of State | |
Flag of a United States ambassador | |
Incumbent since January 20, 2025Douglas Koneff Chargé d'affaires | |
| Nominator | The president of the United States |
| Appointer | The president with Senate advice and consent |
| Inaugural holder | David Humphreys as Minister Resident |
| Formation | February 21, 1791 |
| Website | U.S. Embassy - Lisbon |
Bilateral diplomatic relations between the United States and Portugal date from the earliest years of the United States. Following the Revolutionary War, Portugal was the first neutral country to recognize the United States. On February 21, 1791, President George Washington opened formal diplomatic relations, naming Col. David Humphreys as U.S. Minister Resident. Subsequent envoys were given the title Minister Plenipotentiary.