Look up Cook County in Wiktionary, the free dictionary.

Cook County is a county in Illinois, United States.

Cook County may also refer to:

• Cook County, Georgia, United States
• Cook County, Minnesota, United States
• Cooke County, Texas, United States
• Cook County, New South Wales, Australia
• County of Cook, Queensland, Australia
• Cook County, New Zealand, one of the former counties of New Zealand on the North Island
• Cook County (film)