List of ambassadors of the United States to Costa Rica
Table:
Representative

Title

Presentation
of Credentials

Termination
of Mission

Appointed by

Solon Borland[1]

Envoy Extraordinary and Minister Plenipotentiary

[2]

April 17, 1854

Franklin Pierce

Mirabeau B. Lamar[1]

Minister Resident

September 14, 1858

May 20, 1859

James Buchanan

Alexander Dimitry[1]

Minister Resident

September 29, 1859

April 27, 1861

Charles N. Riotte

Minister Resident

August 29, 1861

January 18, 1867

Abraham Lincoln

Albert G. Lawrence

Minister Resident

January 18, 1867

June 24, 1868

Andrew Johnson

Jacob B. Blair

Minister Resident

October 6, 1868

June 30, 1873

George Williamson[3]

Minister Resident

August 13, 1873

January 31, 1879

Ulysses S. Grant

Cornelius A. Logan[3]

Minister Resident

December 25, 1879

April 17, 1882

Rutherford B. Hayes

Henry C. Hall[3]

Envoy Extraordinary and Minister Plenipotentiary[4]

November 22, 1882

May 16, 1889

Chester A. Arthur

Lansing B. Mizner[3]

Envoy Extraordinary and Minister Plenipotentiary

August 30, 1889

December 31, 1890

Benjamin Harrison

Romualdo Pacheco[3]

Envoy Extraordinary and Minister Plenipotentiary

May 7, 1891

October 31, 1891

Richard Cutts Shannon[5]

Envoy Extraordinary and Minister Plenipotentiary

October 31, 1891

April 30, 1893

Lewis Baker[5]

Envoy Extraordinary and Minister Plenipotentiary

May 20, 1893

December 9, 1897

Grover Cleveland

William L. Merry[6]

Envoy Extraordinary and Minister Plenipotentiary

January 15, 1898

March 4, 1911

William McKinley

Lewis Einstein

Envoy Extraordinary and Minister Plenipotentiary

November 3, 1911

December 29, 1911

William H. Taft

Edward J. Hale

Envoy Extraordinary and Minister Plenipotentiary

August 29, 1913

April 19, 1917[7]

Woodrow Wilson

Stewart Johnson

Chargé d'Affaires ad interim

April 19, 1917

December 5, 1918

John F. Martin, Jr.

Chargé d'Affaires ad interim

October 15, 1920

January 1921

Walter C. Thurston

Chargé d'Affaires ad interim

January 1921

March 1922

Warren G. Harding

Roy T. Davis

Envoy Extraordinary and Minister Plenipotentiary

March 14, 1922

January 4, 1930

Charles C. Eberhardt

Envoy Extraordinary and Minister Plenipotentiary

March 14, 1930

September 24, 1933

Herbert Hoover

Leo R. Sack

Envoy Extraordinary and Minister Plenipotentiary

October 16, 1933

January 10, 1937

Franklin D. Roosevelt

William H. Hornibrook

Envoy Extraordinary and Minister Plenipotentiary

September 2, 1937

September 1, 1941

Arthur Bliss Lane

Envoy Extraordinary and Minister Plenipotentiary

October 27, 1941

March 17, 1942

Robert M. Scotten

Envoy Extraordinary and Minister Plenipotentiary

March 31, 1942

April 20, 1943

Fay Allen Des Portes

Ambassador Extraordinary and Plenipotentiary

May 20, 1943

September 11, 1944

Hallett Johnson

Ambassador Extraordinary and Plenipotentiary

February 14, 1945

May 16, 1947

Walter J. Donnelly

Ambassador Extraordinary and Plenipotentiary

June 27, 1947

October 15, 1947

Harry S. Truman

Nathaniel Penistone Davis

Ambassador Extraordinary and Plenipotentiary

January 31, 1948

June 8, 1949

Joseph Flack

Ambassador Extraordinary and Plenipotentiary

August 13, 1949

September 21, 1950

Philip Bracken Fleming

Ambassador Extraordinary and Plenipotentiary

November 20, 1951

August 7, 1953

Robert C. Hill

Ambassador Extraordinary and Plenipotentiary

November 4, 1953

September 10, 1954

Dwight D. Eisenhower

Robert F. Woodward

Ambassador Extraordinary and Plenipotentiary

December 3, 1954

March 15, 1958

Whiting Willauer

Ambassador Extraordinary and Plenipotentiary

May 5, 1958

April 17, 1961

Raymond Telles

Ambassador Extraordinary and Plenipotentiary

May 22, 1961

February 19, 1967

John F. Kennedy

Clarence A. Boonstra

Ambassador Extraordinary and Plenipotentiary

March 8, 1967

August 11, 1969

Lyndon B. Johnson

Walter C. Ploeser

Ambassador Extraordinary and Plenipotentiary

April 27, 1970

April 13, 1972

Richard Nixon

Viron P. Vaky

Ambassador Extraordinary and Plenipotentiary

October 17, 1972

February 9, 1974

Terence A. Todman

Ambassador Extraordinary and Plenipotentiary

March 17, 1975

January 24, 1977

Gerald Ford

Marvin Weissman

Ambassador Extraordinary and Plenipotentiary

June 28, 1977

March 22, 1980

Jimmy Carter

Francis J. McNeil

Ambassador Extraordinary and Plenipotentiary

July 8, 1980

June 27, 1983

Curtin Winsor, Jr.

Ambassador Extraordinary and Plenipotentiary

July 14, 1983

February 18, 1985

Ronald Reagan

Lewis Arthur Tambs

Ambassador Extraordinary and Plenipotentiary

August 1, 1985

January 1, 1987

Deane Roesch Hinton

Ambassador Extraordinary and Plenipotentiary

November 17, 1987

January 4, 1990

Luis Guinot, Jr.

Ambassador Extraordinary and Plenipotentiary

August 27, 1991

March 1, 1993

George H. W. Bush

Robert O. Homme

Chargé d'Affaires ad interim

March 1993

July 1993

Bill Clinton

Donald Harrington

Chargé d'Affaires ad interim

July 1993

August 1993

Joseph Becelia

Chargé d'Affaires ad interim

August 1993

October 1994

Peter Jon de Vos

Ambassador Extraordinary and Plenipotentiary

October 21, 1994

October 14, 1997

Thomas J. Dodd, Jr.

Ambassador Extraordinary and Plenipotentiary

November 26, 1997

March 1, 2001

John J. Danilovich

Ambassador Extraordinary and Plenipotentiary

October 10, 2001

June 1, 2004

George W. Bush

Mark Langdale

Ambassador Extraordinary and Plenipotentiary

November 8, 2005

July 31, 2007

Peter M. Brennan

Chargé d'Affaires ad interim

August 2007

May 2008

Peter Cianchette

Ambassador Extraordinary and Plenipotentiary

May 5, 2008

June 19, 2009

Anne S. Andrew

Ambassador Extraordinary and Plenipotentiary

December 29, 2009

June 12, 2013

Barack Obama

S. Fitzgerald Haney

Ambassador Extraordinary and Plenipotentiary

June 28, 2015

July 15, 2017

Sharon Day

Ambassador Extraordinary and Plenipotentiary

September 25, 2017

present

Donald Trump

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