This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these messages) This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (March 2013) (Learn how and when to remove this message) This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately from the article and its talk page, especially if potentially libelous. Find sources: "Joan Kelly Horn" – news · newspapers · books · scholar · JSTOR (July 2023) (Learn how and when to remove this message) (Learn how and when to remove this message)

Joan Kelly Horn
Member of the U.S. House of Representatives from Missouri's 2nd district
In office January 3, 1991 – January 3, 1993
Preceded by	Jack Buechner
Succeeded by	Jim Talent
Personal details
Born	(1936-10-18) October 18, 1936 (age 88) St. Louis, Missouri, U.S.
Political party	Democratic

Joan Kelly Horn (born October 18, 1936) is an American politician from Missouri. She served one term in the United States House of Representatives representing Missouri's 2nd congressional district. She is a member of the Democratic Party.

She was elected to Congress in 1990, upsetting incumbent Republican Jack Buechner by 54 votes in a district that included most of St. Louis' western suburbs, such as Florissant, St. Charles, and Town and Country. Earlier in 1990, the Democratic-controlled Missouri state legislature approved a new congressional district map that was intended to preserve heavy Democratic majorities in the two districts that included St. Louis itself — the 1st, represented by Democrat Bill Clay and the 3rd, represented by then-House Majority Leader Dick Gephardt. In the process, the legislature shifted most of the heavily Democratic areas of the 2nd to the 1st and 3rd.

However, the new map had been drawn well before the elections, and no one had anticipated Horn's upset win over Buechner. Horn realized the new map put her in serious electoral trouble, and asked that the map be redrawn, even requesting a sliver of St. Louis. However, Clay and Gephardt turned her down. In November 1992, Horn was narrowly defeated by Republican State House Minority Leader Jim Talent. She was defeated in a rematch against Talent in 1996.

• Women in the United States House of Representatives

• United States Congress. "Joan Kelly Horn (id: H000788)". Biographical Directory of the United States Congress.
• Appearances on C-SPAN