Top 100 Business Consulting Companies in Illinois
The Best of February 2026Looking for a top consulting firm in Illinois?
Consulting firms provide in-depth knowledge and understanding in relation to the client’s industry, technology, and processes. Having this kind of business partner empowers companies to make the best decisions for the business. They provide technical and corporate assistance, helping you resolve your challenges regardless of the industry you’re in.
Consulting firms provide a wide range of services, from creating business strategies to solidifying operational processes. Take your company to the next level by partnering with a firm today. Their knowledge and expertise are valuable assets for every business.
To assist you in your search for a partner, we’ve compiled this list of the top consulting companies in Illinois. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Illinois Business Consulting Firms
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511Undisclosed2 - 9 employeesRolling Meadows, ILMart Consulting Company, a small Business Consulting company, is based in Rolling Meadows, Illinois. Their services include Business Consulting.Read More
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512Undisclosed2 - 9 employeesEvanston, ILStrategic Talent Management Consultants is a Business Consulting company headquartered in Evanston, Illinois. Their services include Business Consulting.Read More
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513Undisclosed50 - 249 employeesChicago, ILKaufman Hall is a Business Consulting company based in Chicago, Illinois. They specialize in Business Consulting.Read More
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514Undisclosed2 - 9 employeesChicago, ILMillan Chicago, a Business Consulting company, is headquartered in Chicago, Illinois. Established in 2018, the team focuses on Business Consulting.Read More
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515Undisclosed10 - 49 employeesChicago, ILLotis Blue Consulting, a Business Consulting company, specializes in Business Consulting. The firm is based in Chicago, Illinois.Read More
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516Undisclosed10 - 49 employeesChicago, ILSmall Business Consulting company Tenet Consulting, is based in Chicago, Illinois. Their services include Business Consulting.Read More
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517Undisclosed2 - 9 employeesChicago, ILSIM Advisory is a Business Consulting company established in 2018. Their team offers Business Consulting.Read More
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518Undisclosed50 - 249 employeesLisle, ILLaunched in 2018, Optivent Group Inc. Is a custom software development company. The team focuses on Custom Software Development and cloud consulting & SI.Read More
Industries
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519$1,000+2 - 9 employeesPalatine, ILHanis Consulting, Inc. Is an Environmental Consulting company headquartered in Palatine, Illinois. They specialize in Environmental Consulting and Business Consulting and were launched in 2016.Read More
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520Undisclosed2 - 9 employeesNiles, ILBased in Niles, Illinois, CTK Advisors is a small Business Consulting company. Their services include Business Consulting and Compliance Consulting.Read More
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521Undisclosed2 - 9 employeesSpringfield, ILIn Springfield, Illinois, HPR Marketing Group is a small Email Marketing company. Their services include Email Marketing and Graphic Design.Read More
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522Undisclosed2 - 9 employeesSpringfield, ILKB Computer Consulting, Inc. Is an IT managed services company. The team focuses on IT managed services and Business Consulting and is headquartered in Springfield, Illinois.Read More
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523Undisclosed2 - 9 employeesGrandview, ILSmall Business Consulting company Springfield IL SEO, is headquartered in Grandview, Illinois. Their services include Business Consulting and Marketing Strategy.Read More
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524Undisclosed2 - 9 employeesBolingbrook, ILEberhart Accounting Services is a small Accounting company located in Bolingbrook, Illinois. Their services include Accounting and Business Consulting.Read More
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525Undisclosed2 - 9 employeesPeoria, ILSupreme Accounting & Tax Services, Inc is a small Accounting company headquartered in Peoria, Illinois. The team focuses on Accounting and Business Consulting.Read More
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526Undisclosed2 - 9 employeesNaperville, ILSunshine is an Accounting company. The small Naperville, Illinois-based team focuses on Accounting and Business Consulting. The company was established in 1999.Read More
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527Undisclosed2 - 9 employeesBloomington, ILFounded in 1987, Tax & Accounting Plus Inc. Is a small Accounting company. Their team offers Accounting and Business Consulting.Read More
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528Undisclosed2 - 9 employeesWaukegan, ILAapril Tax Service, Inc. Is an Accounting company. They provide Accounting and Business Consulting and were launched in 1993. The agency is in Waukegan, Illinois.Read More
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529Undisclosed2 - 9 employeesSycamore, ILCosmos Enterprises LLC is a Business Consulting company based in Sycamore, Illinois. They specialize in Business Consulting and Web Design and were launched in 2003.Read More
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530Undisclosed2 - 9 employeesRock Island, ILUpStream Consulting is a small Business Consulting company located in Rock Island, Illinois. Their services include Business Consulting and Marketing Strategy.Read More
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531Undisclosed2 - 9 employeesWilmette, ILThe Boulder Group, a Commercial Brokerage Services company, was established in 1997. The team specializes in Commercial Brokerage Services and Commercial Financing.Read More
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532Undisclosed2 - 9 employeesChicago, ILCorporate Training & Coaching company The Red Bee Group LLC was established in 2019. The firm specializes in Corporate Training & Coaching and Business Consulting.Read More
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533Undisclosed2 - 9 employeesChicago, ILMAP Strategies is a small Architectural Design company. They specialize in Architectural Design and Business Consulting and were launched in 2014.Read More
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534Undisclosed2 - 9 employeesChicago, ILChicago Consulting is a small Logistics & Supply Chain Consulting company. They provide Logistics & Supply Chain Consulting and Warehousing & Distribution and were launched in 1983.Read More
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535Undisclosed2 - 9 employeesChicago, ILSmartHire Inc., a Business Consulting company, focuses on Business Consulting and Staffing. The company is headquartered in Chicago, Illinois.Read More
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536Undisclosed2 - 9 employeesChicago, ILStromberg Sport is a branding agency. The small Chicago, Illinois-based team specializes in Branding and Marketing Strategy. The firm was founded in 2012.Read More
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537Undisclosed2 - 9 employeesNorthbrook, ILArya Consulting Partners, a small branding company, is located in Northbrook, Illinois. Their services include Branding and Marketing Strategy.Read More
Industries
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538Undisclosed2 - 9 employeesNaperville, ILGierach Law Firm is a Business Consulting company. The team focuses on Business Consulting and Corporate Law, and the agency is located in Naperville, Illinois.Read More
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539$1,000+2 - 9 employeesNorthbrook, ILChicago Executive Coaching is a Corporate Training & Coaching company. Launched in 2001, the team focuses on Corporate Training & Coaching. The agency is headquartered in Northbrook, Illinois.Read More
Industries
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540Undisclosed2 - 9 employeesGrayslake, ILHamilton Tax and Accounting LLC is an Accounting company. Their small team is headquartered in Grayslake, Illinois. Their team offers Accounting and Business Consulting.Read More
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