Four members of the U.S. House of Representatives were elected in special elections in 1973 to the 93rd United States Congress.
Elections are listed by date and district.
|- ! | Nick Begich | | Democratic | 1970 | | Incumbent disappeared in a plane crash and declared dead.<br/>New member elected March 6, 1973.<br/>Republican gain. | nowrap |
|- ! | Hale Boggs | | Democratic | 1940 | | Incumbent lost in a plane crash and declared dead January 3, 1973.<br/>New member elected March 20, 1973.<br/>Democratic hold. | nowrap |
|- ! | William Mills | | Republican | 1971 | | Incumbent died May 24, 1973.<br/>New member elected August 21, 1973.<br/>Republican hold. | nowrap |
|- ! | George W. Collins | | Democratic | 1970 | | Incumbent member-elect died December 8, 1972, during the previous congress.<br/>New member elected June 5, 1973.<br/>Democratic hold. | nowrap |