Kirkland & Ellis LLP
Chicago‑headquartered global leader; founded in 1909. $8.8 billion in revenue in 2024, ~3,500 attorneys. Top in private equity, restructuring & litigation.
Sidley Austin LLP
Founded in Chicago in 1866; one of the world’s largest firms with ~2,300 attorneys and ~$3.1 billion revenue (2023). Strong across corporate, litigation, regulatory.
Winston & Strawn LLP
Established 1853 in Chicago, now ~975 attorneys. International litigation & transactional practice across multiple industries.
Baker McKenzie
https://www.bakermckenzie.com/
Global firm headquartered in Chicago; founded in 1949. ~4,558 attorneys across 68 offices, revenue ~$3.3 billion (2023), notable in cross‑border work.
Segal McCambridge Singer & Mahoney
Chicago‑based litigation boutique since 1986 (~141 attorneys) focused on toxic tort, appellate, construction, employment, insurance and professional liability.
Katten Muchin Rosenman LLP
Full‑service Chicago‑based firm (~700 attorneys) known for commercial finance, IP, structured finance, sports law and private wealth.
Neal, Gerber & Eisenberg LLP
Mid‑sized Chicago firm (founded 1986), widely recognized for corporate, litigation, and diverse commercial practice strengths.
Illinois Legal Aid Online (ILAO)
https://www.illinoislegalaid.org/
Statewide self‑help and referral service; guides low‑income residents to legal aid, forms, hotlines, clinics across Illinois.
Prairie State Legal Services
Nonprofit serving downstate legal needs; offers free civil support in housing, benefits, family, consumer, and public benefits.