Top 100 Business Consulting Companies in Illinois
The Best of August 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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601Undisclosed2 - 9 employeesBarrington, ILBarrington Area Chamber of Commerce is a small Accounting and Business Consulting company based in Barrington, Illinois. Their services include Accounting and Business Consulting.Read More
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602Undisclosed2 - 9 employeesDeerfield, ILScott, Horewitch, Pidgeon & Abrams, LLC is a small Deerfield, Illinois-based Accounting and Business Consulting company. The team provides Accounting and Business Consulting.Read More
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603Undisclosed2 - 9 employeesSchaumburg, ILSmall Accounting and Business Consulting company Pradip Patel and Company, is located in Schaumburg, Illinois. Their services include Accounting and Business Consulting.Read More
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604Undisclosed2 - 9 employeesArlington Heights, ILSmall Accounting and Business Consulting company Gurgiolo Associates, is in Arlington Heights, Illinois. The team provides Accounting and Business Consulting.Read More
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605Undisclosed2 - 9 employeesBartlett, ILSwing Consulting Inc Strategic is a Corporate Training & Coaching and Business Consulting company. They were founded in 1991 and specialize in Corporate Training & Coaching and Business Consulting.Read More
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606Undisclosed2 - 9 employeesElk Grove Village, ILLaunched in 2013, Jinstar Inc is a small Business Consulting and Marketing Strategy company. Their team provides Business Consulting and Marketing Strategy.Read More
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607Undisclosed2 - 9 employeesSt. Charles, ILLilly Management Group is a Business Consulting company. They were launched in 2005 and provide Business Consulting and Product Design.Read More
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608Undisclosed2 - 9 employeesSpringfield, ILRuby Electric Inc. Is a small Interior Design and Business Consulting company based in Springfield, Illinois. The team provides Interior Design and Business Consulting.Read More
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609Undisclosed2 - 9 employeesSpringfield, ILThe Personal Growth Channel is a Corporate Training & Coaching and Business Consulting company. They offer Corporate Training & Coaching and Business Consulting and are based in Springfield, Illinois.Read More
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610Undisclosed2 - 9 employeesSpringfield, ILInnovate Springfield is a small Springfield, Illinois-based Business Consulting and HR Consulting company. The team offers Business Consulting and HR Consulting.Read More
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611Undisclosed2 - 9 employeesSpringfield, ILSandler Training Springfield is a small Corporate Training & Coaching and Business Consulting company in Springfield, Illinois. The team provides Corporate Training & Coaching and Business Consulting.Read More
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612Undisclosed2 - 9 employeesSpringfield, ILKopec, White & Spooner is a small Accounting and Business Consulting company located in Springfield, Illinois. Their services include Accounting and Business Consulting.Read More
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613Undisclosed2 - 9 employeesEvanston, ILSmall Business Consulting company The Darkest Horse Ventures , LLC, is in Evanston, Illinois. Their services include Business Consulting and Corporate Training & Coaching.Read More
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614Undisclosed2 - 9 employeesChicago, ILBusiness Consulting and Corporate Training & Coaching company Trimmel Consulting and Coaching, LLC was established in 2011. The team focuses on Business Consulting and Corporate Training & Coaching.Read More
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615Undisclosed2 - 9 employeesWestmont, ILMC Consulting Inc. (MC2) is a Business Consulting and Corporate Training & Coaching company. They were founded in 1999 and focus on Business Consulting and Corporate Training & Coaching.Read More
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616Undisclosed2 - 9 employeesGeneva, ILInterior Design and Business Consulting company Workplace Studio was founded in 2014. The team specializes in Interior Design and Business Consulting and is located in Geneva, Illinois.Read More
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617Undisclosed2 - 9 employeesChicago, ILBusiness Consulting and Compliance Consulting company Compliance & Competition Consultants, LLC focuses on Business Consulting and Compliance Consulting. They are located in Chicago, Illinois.Read More
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618Undisclosed2 - 9 employeesVernon Hills, ILMarie Daniel Group, LLC is a branding firm. Their small team of employees is located in Vernon Hills, Illinois. Their team specializes in Branding and Public Relations.Read More
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619Undisclosed10 - 49 employeesChicago, ILCanback Consulting is a Cambridge, Massachusetts-based Business Consulting company. The team provides Business Consulting.Read More
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620UndisclosedFreelancer employeesAlgonquin, ILPeak Growth Partners is a Business Consulting company. Their small team is located in Algonquin, Illinois and focuses on Business Consulting and Marketing Strategy. The agency was launched in 2015.Read More
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621$1,000+Freelancer employeesChicago, ILAstucia, an AI Consulting company, was launched in 2025. The small team offers AI Consulting and Artificial Intelligence.Read More
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622Undisclosed50 - 249 employeesChicago, ILAvionos is a Marketing Strategy company. Located in Chicago, Illinois, the team specializes in Marketing Strategy and Digital Strategy.Read More
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623Undisclosed50 - 249 employeesChicago, ILEstablished in 2005, The Claro Group is a Commercial Financing company. The team focuses on Commercial Financing and Accounting.Read More
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624Undisclosed50 - 249 employeesJerseyville, ILVerve Industrial, a data analytics company, was established in 1994. The company specializes in BI & big data consulting & SI and Cybersecurity, and is midsize.Read More
Industries
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625Undisclosed50 - 249 employeesChicago, ILSyntellis Performance Solutions is a Financial Consulting company. They are in Chicago, Illinois, and their services include Financial Consulting and Market Research.Read More
Industries
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626Undisclosed50 - 249 employeesPark Ridge, ILSales Outsourcing company Policy Claim Management International (PCMI) is located in Park Ridge, Illinois. They provide Sales Outsourcing and Market Research.Read More
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627$25,000+10 - 49 employeesChicago, ILMangrum Career Solutions is a Business Consulting company. The Cincinnati, Ohio-based agency was founded in 2009. Their team focuses on Business Consulting and Executive Search.Read More
Industries
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628Undisclosed10 - 49 employeesOak Brook, ILJR Bechtle & Co. Is a Business Consulting company. The Burlington, Massachusetts-based company was established in 1979. Their services include Business Consulting and Executive Search.Read More
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629$5,000+50 - 249 employeesChicago, ILEstablished in 2025, Kaiso Research & Consulting is a Market Research company. Their team provides Market Research and Business Consulting.Read More
Industries
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630Undisclosed50 - 249 employeesChicago, ILJabian Consulting is an IT strategy consulting company. The team specializes in IT strategy consulting and Business Consulting, and the firm is in Atlanta, Georgia and Charlotte, North Carolina.Read More
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