The 1980 Wisconsin Supreme Court election was held on April 1, 1980, to elect a justice to the Wisconsin Supreme Court for a ten-year term. Incumbent justice Connor Hansen did not seek re-election. Donald W. Steinmetz narrowly defeated Louis J. Ceci in the general election. Preceding the general election was a nonpartisan primary held on February 19, in which the two had advanced from over P. Charles Jones.
The general election result was very narrow. , no subsequent election the court has been won by a narrower vote-share.
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| Nonpartisan primary (February 19, 1980)
| colspan="6" style="text-align:center;background-color: #e9e9e9;"| General election (April 1, 1980)