The ACLU of Illinois is the leading protector of constitutional rights in the state and has been since its establishment in 1926. As a non-partisan and non-profit organization, the ACLU of Illinois, along with its affiliated Roger Baldwin Foundation (RBF), is dedicated to safeguarding the liberties granted by the U. S.

Constitution, the state Constitution, and state/federal human rights laws. Through litigation, lobbying, and public education, the ACLU of Illinois achieves its objectives across a wide range of civil liberties issues. The RBF, established in 1969, has expanded the organization's capacity to pursue impactful litigation and educational programs by providing tax-deductible support.

Renowned for its advocacy in areas such as racial justice, religious liberty, freedom of expression, rights of children and people with disabilities, criminal justice reform, LGBTQ+ rights, and reproductive justice, the ACLU of Illinois demonstrates its commitment to freedom, equality, and justice. With a growing membership both in Illinois and nationwide, the ACLU continues to protect civil liberties through litigation, lobbying, and education