There were elections in 1909 to the United States House of Representatives:
|Member / Delegate||Party||First elected||Results||Candidates|
|Louisiana 2||Robert C. Davey||Democratic||1892
|Incumbent member-elect died during previous congress.
New member elected March 30, 1909.
|Ohio 21||Theodore E. Burton||Republican||[data unknown/missing]||Incumbent member-elect resigned during previous congress.
New member elected April 20, 1909.
|Illinois 6||William Lorimer||Republican||[data unknown/missing]||Incumbent resigned June 17, 1909, after being elected to the U.S. Senate.
New member elected November 23, 1909.
|Washington 2||Francis W. Cushman||Republican||1898||Incumbent died July 6, 1909.
New member elected November 2, 1909.
|Philippines at-large||Pablo Ocampo||Democratic||1907||Term ended November 22, 1909.
New delegate elected November 23, 1909.
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