
Frederick W.B. Coleman
Title: Envoy Extraordinary and Minister Plenipotentiary
Appointment: Sep 20, 1922
Presentation of Credentials: Nov 13, 1922
Termination of Mission: Left post, Oct 20, 1931
Note: Also accredited to Estonia and Lithuania; resident at Riga.

Robert P. Skinner
Title: Envoy Extraordinary and Minister Plenipotentiary
Appointment: Sep 23, 1931
Presentation of Credentials: Jan 28, 1932
Termination of Mission: Left post, Apr 29, 1933
Note: Commissioned during a recess of the Senate; recommissioned after confirmation on Dec 17, 1931. Also accredited to Estonia and Lithuania; resident at Riga.

John Van A. MacMurray
Title: Envoy Extraordinary and Minister Plenipotentiary
Appointment: Aug 28, 1933
Presentation of Credentials: Dec 13, 1933
Termination of Mission: Left post, Feb 12, 1936
Note: Commissioned during a recess of the Senate; recommissioned after confirmation on Jan 15, 1934. Also accredited to Estonia and Lithuania; resident at Riga.

Arthur Bliss Lane
Title: Envoy Extraordinary and Minister Plenipotentiary
Appointment: Jan 24, 1936
Presentation of Credentials: Jul 2, 1936
Termination of Mission: Left post, Sep 16, 1937

Frederick A. Sterling
Title: Envoy Extraordinary and Minister Plenipotentiary
Appointment: Aug 9, 1937
Note: Also commissioned to Estonia; took oath of office, but did not proceed to post.

John C. Wiley
Title: Envoy Extraordinary and Minister Plenipotentiary
Appointment: Jul 18, 1938
Presentation of Credentials: Oct 6, 1938
Termination of Mission: Soviet forces occupied Riga, Jun 17, 1940; left post Jul 25, 1940
Note: Commissioned during a recess of the Senate; recommissioned after confirmation on Jan 20, 1939. Also accredited to Estonia; resident at Riga.

Ints Silins
Title: Ambassador Extraordinary and Plenipotentiary; career diplomat
Appointed: March 23, 1992
Presented credentials: April 10, 1992
Terminated mission: Left post July 14, 1995

Larry C. Napper
Title: Ambassador Extraordinary and Plenipotentiary; career diplomat
Appointed: June 27, 1995
Presidential credentials: August 1, 1995
Terminated mission: Left post October 1, 1998

James H. Holmes
Title: Ambassador Extraordinary and Plenipotentiary; career diplomat
Appointed: August 4, 1998
Presented credentials: August 27, 1998
Terminated mission: Left post September 15, 2001

Brian E. Carlson
Title: Ambassador Extraordinary and Plenipotentiary; career diplomat
Appointed: November 5, 2001
Presented credentials: December 4, 2001
Terminated mission: Left post December 6, 2004

Catherine Todd Bailey
Title: Ambassador Extraordinary and Plenipotentiary; political appointee
Appointed: November 29, 2004
Presented credentials: February 4, 2005
Terminated mission: c. December 2007

Charles Larson Jr.
Title: Ambassador Extraordinary and Plenipotentiary
Appointed: December 2, 2007
Presented credentials: January 7, 2008
Terminated mission: January 20, 2009

Judith G. Garber
Title: Ambassador Extraordinary and Plenipotentiary; career diplomat
Appointed: June 25, 2009
Presented credentials: August 25, 2009
Terminated mission: July 9, 2012

Mark A. Pekala
Title: Ambassador Extraordinary and Plenipotentiary; career diplomat
Appointed: March 29, 2012
Presented credentials: August 2012
Terminated mission: August 2014

Nancy Bikoff Pettit
Title: Ambassador Extraordinary and Plenipotentiary; career diplomat
Appointed: June 24, 2015
Presented credentials: September 8, 2015
Terminated mission: July 2019

John L. Carwile
Title: Ambassador Extraordinary and Plenipotentiary; career diplomat
Appointed: September 26, 2019
Presented credentials: November 5, 2019
Terminated mission: January 27, 2023