The following officials have served as chiefs of the United States Mission to Canada.
Chiefs of the United States Mission to Canada
| Name | Presentation of Credentials | Termination of Mission |
|---|---|---|
| William Phillips | 6/1/27 | 12/14/29 |
| Hanford MacNider | 8/29/30 | 8/15/32 |
| Warren Delano Robbins | 5/16/33 | 3/28/35 |
| Norman Armour | 8/7/35 | 1/15/38 |
| Daniel C. Roper | 5/19/39 | 8/20/39 |
| James H.R. Cromwell | 1/24/40 | 5/16/40 |
| Jay Pierrepont Moffat | 6/13/40 | 1/24/43 |
| Ray Atherton1 | 8/3/43 | 8/30/48 |
| Laurence A. Steinhardt | 11/1/49 | 3/28/50 |
| Stanley Woodward | 6/22/50 | 1/14/53 |
| R. Douglas Stuart | 7/15/53 | 5/4/56 |
| Livingston T. Merchant | 5/23/56 | 11/6/58 |
| Richard B. Wigglesworth | 12/15/58 | 10/19/60 |
| Livingston T. Merchant | 3/15/61 | 5/26/62 |
| W. Walton Butterworth | 12/11/62 | 9/10/68 |
| Harold F. Linder | 9/10/68 | 7/9/69 |
| Adolph W. Schmidt | 9/11/69 | 1/29/74 |
| William J. Porter | 3/13/74 | 12/16/75 |
| Thomas O. Enders | 2/17/76 | 9/14/79 |
| Kenneth M. Curtis | 10/5/79 | 1/20/81 |
| Paul H. Robinson, Jr. | 7/15/81 | 9/9/85 |
| Thomas M.T. Niles | 9/10/85 | 6/28/89 |
| Edward Ney | 6/30/89 | 6/20/92 |
| Peter Teeley | 7/3/92 | 2/29/93 |
| James Blanchard | 8/19/93 | 3/15/96 |
| Gordon Giffin | 9/17/97 | 4/10/01 |
| Paul Cellucci | 4/17/01 | 3/18/05 |
| David H. Wilkins | 6/29/05 | 1/20/09 |
| David Jacobson | 10/2/09 | 7/15/13 |
| Bruce A. Heyman | 4/8/2014 | 1/19/2017 |
| Kelly Craft | 10/23/2017 | 09/12/2019 |
| David L. Cohen | 12/7/2021 |
1Please note that Atherton was the first U.S. Ambassador to Canada, a title he received when the then-U.S. delegation in Ottawa was upgraded to an Embassy in 1943. Prior to that the Chief of Mission was known as Minister
