Five members of the U.S. House of Representatives were elected in special elections in 1973.
Elections are listed by date and district.
|Alaska at-large||Nick Begich||Democratic||Incumbent lost in a plane crash and declared dead pursuant to H.Res. 1 January 3, 1973.
New member elected March 6, 1973.
|Louisiana 2||Hale Boggs||Democratic||Incumbent lost in a plane crash and declared dead pursuant to H.Res. 1 January 3, 1973.
New member elected March 20, 1973.
|Maryland 1||William Mills (R)||Republican||Incumbent died May 24, 1973.
New member elected August 21, 1973.
|Illinois 7||Vacant||Incumbent member-elect George W. Collins (D) died during previous congress.
New member elected June 5, 1973.