The Libertarian Party of Illinois is the Illinois affiliate of the Libertarian Party. The current state chair is Bill Redpath. There are nine Libertarian officeholders in Illinois.

Libertarian Party of Illinois mission is: To elect Libertarians to office and move public policy in a libertarian direction.^[1]

Key tenets of the Libertarian Party platform include the following:^[2]

• Adoption of laissez-faire principles to reduce the state's role in economic government. This would include, among other things, markedly reduced taxation, privatization of Social Security and welfare (for individuals, as well as elimination of "corporate welfare"), markedly reduced regulation of business, rollbacks of labor regulations, and reduction of government interference in foreign trade.
• Protection of property rights.
• Minimal government bureaucracy. The Libertarian Party states that the government's responsibilities should be limited to the protection of individual rights from the initiation of force and fraud.
• Civil libertarianism: Support for the protection of civil liberties, including the right to privacy, freedom of speech, freedom of association, and sexual freedom.
• Opposition to laws such as affirmative action and some non-discrimination laws in the private sector.
• Support for the unrestricted right to the means of self-defense (such as gun rights, the right to carry mace, pepper spray, or tasers etc.).
• Abolition of laws against "victimless crimes" (such as prostitution, seat belt laws, use of controlled substances, fraternization, etc.).
• Opposition to regulations on how businesses should run themselves (e.g. smoking bans)
• A foreign policy of free trade and non-interventionism.
• Support for a fiscally responsible government including a hard currency (commodity-based money supply as opposed to fiat currency).
• Abolition of all forms of taxpayer-funded assistance (welfare, food stamps, public housing, Health care, etc.)
• A pro-choice belief that abortion is a personal issue, and should not be part of government.^[3]

As of January 17, 2024, the party has established party status in Cook, McLean, and Tazewell counties.^{[4][lower-alpha 1]}

After the 1994 general election, the Libertarian Party achieved established party status for statewide offices in Illinois. This occurred after its candidates for the then-elected University of Illinois Board of Trustees cumulatively received 5.5% of all votes cast.^[7] After the party's success in the 1998 election for Ford County Sheriff and other countywide offices, it achieved established party status. Due to its second place showing over the then-dormant Democratic Party in that election, the Libertarians received the minority party's seat on the Board of Review and one of the five seats on the Sheriff's Merit Commission.^[8] This status was lost by 2002 after the Libertarian Party failed to field any candidates in the 2002 general election.^[9]

As of January 10, 2024, the United States Libertarian Party lists nine members holding office in Illinois.^[11]

• Brody Anderson, trustee of the River Valley Library District Board of Trustees (Port Byron)
• Sasha Cohen, City Clerk of Dekalb^{[lower-alpha 2]}
• Justin Gerstner, Village President of Hamel
• Chris Laurent, City of Chicago 14th Police District Council
• Patrick Liapes, Trustee of the Poplar Creek Library Board (Streamwood).
• Kelly Liebmann, Township Trustee of Greenwood Township
• Aisha Pickett, City Treasurer of Harvey
• Jonathan Russell, member of the Harrisburg Community Unit School District #3 Board of Education (Harrisburg)
• Brandon Wisenburg, Village Trustee of Peoria Heights

• List of state Libertarian Parties in the United States