Columns: District | Vacator | Reason for change | Successor | Date successor seated
Virginia 3rd | Andrew Jackson Montague (D) | Died January 24, 1937 | Dave E. Satterfield, Jr. (D) | November 2, 1937 | Texas 10th | James P. Buchanan (D) | Died February 22, 1937 | Lyndon B. Johnson (D) | April 10, 1937 | California 10th | Henry E. Stubbs (D) | Died February 28, 1937 | Alfred J. Elliott (D) | May 4, 1937 | Pennsylvania 18th | Benjamin K. Focht (R) | Died March 27, 1937 | Richard M. Simpson (R) | May 11, 1937 | New York 27th | Philip A. Goodwin (R) | Died June 6, 1937 | Lewis K. Rockefeller (R) | November 2, 1937 | Massachusetts 7th | William P. Connery, Jr. (D) | Died June 15, 1937 | Lawrence J. Connery (D) | September 28, 1937 | New York 17th | Theodore A. Peyser (D) | Died August 8, 1937 | Bruce F. Barton (R) | November 2, 1937 | Oklahoma 5th | Robert P. Hill (D) | Died October 29, 1937 | Gomer Griffith Smith (D) | December 10, 1937 | New Jersey 9th | Edward A. Kenney (D) | Died January 27, 1938 | Vacant until the next Congress | Vacant until the next Congress | California 17th | Charles J. Colden (D) | Died April 15, 1938 | Vacant until the next Congress | Vacant until the next Congress | New Hampshire 1st | Arthur B. Jenks (R) | Lost contested election June 9, 1938 | Alphonse Roy (D) | June 9, 1938 | South Carolina 6th | Allard H. Gasque (D) | Died June 17, 1938 | Elizabeth Hawley Gasque (D) | September 13, 1937 | New York 1st | Robert L. Bacon (R) | Died September 12, 1938 | Vacant until the next Congress | Vacant until the next Congress | Resident Commissioner of the Philippines | Quintin Paredes (NAC) | Resigned September 29, 1938 | Joaquín Miguel Elizalde (NAC) | September 29, 1938 | New York 15th | John J. Boylan (D) | Died October 5, 1938 | Vacant until the next Congress | Vacant until the next Congress | New York 42nd | James M. Mead (D) | Resigned December 2, 1938 to run for the US Senate | Vacant until the next Congress | Vacant until the next Congress