The 1992 Schleswig-Holstein state election was held on 5 April 1992 to elect the members of the Landtag of Schleswig-Holstein. The incumbent Social Democratic Party (SPD) government led by Minister-President Björn Engholm narrowly retained its majority by a margin of one seat. The major change of the election was the entry of the national conservative German People's Union to the Landtag. The Free Democratic Party also re-entered the Landtag, while The Greens failed to surpass the threshold by a margin of 0.03%.
The table below lists parties represented in the previous Landtag of Schleswig-Holstein.
|- | colspan=8| |- ! colspan="2" | Party ! Votes ! % ! +/- ! Seats ! +/- ! Seats % |- | bgcolor=| | align=left | Social Democratic Party (SPD) | align=right| 687,427 | align=right| 46.2 | align=right| 8.6 | align=right| 45 | align=right| 1 | align=right| 50.6 |- | bgcolor=| | align=left | Christian Democratic Union (CDU) | align=right| 503,510 | align=right| 33.8 | align=right| 0.5 | align=right| 32 | align=right| 5 | align=right| 36.0 |- | bgcolor=| | align=left | German People's Union (DVU) | align=right| 93,295 | align=right| 6.3 | align=right| 6.4 | align=right| 6 | align=right| 6 | align=right| 6.7 |- | bgcolor=| | align=left | Free Democratic Party (FDP) | align=right| 82,963 | align=right| 5.6 | align=right| 1.2 | align=right| 5 | align=right| 5 | align=right| 5.6 |- | bgcolor=| | align=left | South Schleswig Voters' Association (SSW) | align=right| 28,245 | align=right| 1.9 | align=right| 0.2 | align=right| 1 | align=right| ñ0 | align=right| 1.1 |- ! colspan=8| |- | bgcolor=| | align=left | Alliance 90/The Greens (Grüne) | align=right| 74,014 | align=right| 5.0 | align=right| 2.9 | align=right| 0 | align=right| ñ0 | align=right| 0 |- | bgcolor=| | align=left | The Republicans (REP) | align=right| 18,225 | align=right| 1.2 | align=right| 0.6 | align=right| 0 | align=right| ñ0 | align=right| 0 |- | bgcolor=| | align=left | Others | align=right| 230 | align=right| 0.0 | align=right| | align=right| 0 | align=right| ñ0 | align=right| 0 |- ! align=right colspan=2| Total ! align=right| 1,487,909 ! align=right| 100.0 ! align=right| ! align=right| 89 ! align=right| 15 ! align=right| |- ! align=right colspan=2| Voter turnout ! align=right| ! align=right| 71.7 ! align=right| 5.7 ! align=right| ! align=right| ! align=right|