The Eighty-Fourth Wisconsin Legislature convened from January 3, 1979, to January 5, 1981, in regular session, and also convened in three special sessions.

[1] Senators representing odd-numbered districts were newly elected for this session and were serving the first two years of a four-year term.

Assembly members were elected to a two-year term.

Senators representing even-numbered districts were serving the third and fourth year of a four-year term, having been elected in the general election of November 2, 1976.

[1] The governor of Wisconsin during this entire term was Republican Lee S. Dreyfus, of Portage County, serving the first two years of a four-year term, having won election in the 1978 Wisconsin gubernatorial election.