Jo Ann McIntosh Zimmerman (December 24, 1936 – October 22, 2019) was an American democratic politician who served as the 42nd Lieutenant Governor of Iowa from 1987 to 1991.

Zimmerman was born on December 24, 1936, to Russell and Hazel McIntosh, in Van Buren County, Iowa as the eldest of three children.

[3] During her high school years, she helped to establish the first Girls Scout troop in Keosauqua and was active in fine arts, such as band and drama.

[5] In 1982, Zimmerman won election to the Iowa House of Representatives where she advocated for improved healthcare, cleaner air, and living wills.

Certain policies Zimmerman was involved in included the passage of the ERA, refinement of abortion rights, creation of a statewide library system, and establishment of government programs focused on providing assistance to the elderly.

[3] Zimmerman briefly entered the 1990 gubernatorial election to unseat incumbent governor Branstad, but dropped out to run on the Iowa Democratic Party ticket as Lt.

[11] The AFSMCE, the FINE Educational Research Foundation, and the Roundtable for Women Legislators are also organizations Zimmerman engaged with.

[12] On August 27, 2005, Jo Ann Zimmerman was inducted into Iowa Women's Hall of Fame with three other inductees: Johnie Wright Hammond, Brenda LaBlanc, and Susan Schechter.