Top 100 Business Consulting Companies in Illinois
The Best of December 2025Looking 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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241Undisclosed1,000 - 9,999 employeesChicago, ILSpencer Stuart, a Staffing company, was launched in 1956. The firm offers Staffing and Recruiting.Read More
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242Undisclosed50 - 249 employeesChicago, ILLCM Architects is a midsize Engineering company. They offer Engineering and Business Consulting and were launched in 1996.Read More
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243Undisclosed1,000 - 9,999 employeesChicago, ILAccounting company Stout Risius Ross, LLC was launched in 1991. The team offers Accounting and Business Valuation Services and is in Chicago, Illinois.Read More
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244Undisclosed50 - 249 employeesChicago, ILClaro Healthcare, a Business Consulting company, is in Chicago, Illinois. Established in 2017, the team focuses on Business Consulting and Corporate Training & Coaching.Read More
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245Undisclosed50 - 249 employeesChicago, ILLaunched in 1998, Briljent, LLC is a Content Writing Services company. Their services include Content Writing Services and Business Consulting.Read More
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246Undisclosed2 - 9 employeesChicago, ILPinnacle View Inc. Is a graphic design agency. Founded in 2017, the agency is headquartered in Alpharetta, Georgia and Chicago, Illinois. Their team focuses on Graphic Design and Marketing Strategy.Read More
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247$1,000+2 - 9 employeesPalatine, ILJRB Team is a branding agency launched in 2013. The firm specializes in Branding and Marketing Strategy, and is small.Read More
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248$5,000+2 - 9 employeesSchaumburg, IL773Designs is a web design company founded in 2018. The company provides Web Design and Web Development.Read More
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249Undisclosed250 - 999 employeesAurora, ILSoftware development company Q1 Technologies, Inc. Is headquartered in Aurora, Illinois. They provide Custom Software Development and IT managed services and were established in 2002.Read More
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250Undisclosed250 - 999 employeesChicago, ILSilvr Lining Group - A Spaulding Ridge Company, a cloud consulting & SI company, was founded in 2017. The midsize team specializes in cloud consulting & SI and CRM consulting and SI.Read More
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251$1,000+2 - 9 employeesWest Chicago, ILFounded in 2018, Accrue Agency is a Marketing Strategy company. The team offers Marketing Strategy and Advertising and is in West Chicago, Illinois.Read More
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252Undisclosed2 - 9 employeesGlen Ellyn, ILGrotto Marketing is a Glen Ellyn, Illinois-based Content Marketing company. The team offers Content Marketing and Digital Strategy.Read More
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253$1,000+2 - 9 employeesChicago, ILFission, a small Other Marketing company, is located in Chicago, Illinois. The team specializes in Other Marketing and Marketing Strategy.Read More
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254Undisclosed2 - 9 employeesChicago, ILO-H Community Partners is a Business Consulting company based in Chicago, Illinois. Founded in 2004, the team provides Business Consulting and unified communications consulting & SI.Read More
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255Undisclosed2 - 9 employeesRockford, ILThinker Ventures is a small Business Consulting company launched in 2011. Their team offers Business Consulting and Branding.Read More
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256Undisclosed2 - 9 employeesMundelein, ILRowe-Thrush, Inc., a Business Consulting and Market Research company, was launched in 1940. The agency focuses on Business Consulting and Market Research.Read More
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257Undisclosed2 - 9 employeesWheaton, ILBlane, Canada Ltd. Is a Business Consulting and Marketing Strategy company. Based in Wheaton, Illinois, the firm was launched in 1983. Their team provides Business Consulting and Marketing Strategy.Read More
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258Undisclosed2 - 9 employeesLake Forest, ILFinance & Accounting Outsourcing (FAO) and Business Consulting company Capri Consulting was launched in 2003. The firm specializes in Finance & Accounting Outsourcing (FAO) and Business Consulting.Read More
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259Undisclosed2 - 9 employeesLake in the Hills, ILSmall Business Consulting and HR Consulting company Pinion Solutions Group, is based in Lake in the Hills, Illinois. The team offers Business Consulting and HR Consulting.Read More
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260Undisclosed2 - 9 employeesChicago, ILThe e-tailing group, inc. Is a Business Consulting company. Headquartered in Chicago, Illinois, the company focuses on Business Consulting and Market Research.Read More
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261Undisclosed2 - 9 employeesChicago, ILMarket Research and Business Consulting company CiTTA Partnership LLC was established in 2011. The team focuses on Market Research and Business Consulting and is in Chicago, Illinois.Read More
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262Undisclosed2 - 9 employeesChicago, ILBusiness Consulting company ShapeConnect is in Chicago, Illinois. Their services include Business Consulting and HR Consulting.Read More
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263Undisclosed2 - 9 employeesLindenhurst, ILKolz Associates, LLC, a Business Consulting and Business Valuation Services company, was founded in 2013. The agency specializes in Business Consulting and Business Valuation Services.Read More
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264Undisclosed2 - 9 employeesChicago, ILLaunched in 1994, Burger Consulting Group is a Business Consulting company. The team provides Business Consulting and IT strategy consulting.Read More
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265$100,000+10 - 49 employeesNaperville, ILFounded in 2018, Flexday Solutions LLC is a small Naperville, Illinois-based IT strategy consulting company. Their services include IT strategy consulting and cloud consulting & SI.Read More
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266Undisclosed10 - 49 employeesDes Plaines, ILMEGATECSOL Inc. , a SEO services firm, specializes in Search Engine Optimization and UX/UI Design. The firm is in Des Plaines, Illinois.Read More
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267Undisclosed50 - 249 employeesChicago, ILHeadquartered in Chicago, Illinois, Resolution Economics is a Business Consulting company. The team specializes in Business Consulting and HR Consulting.Read More
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268$25,000+10 - 49 employeesNaperville, ILWorking Excellence is a business intelligence company launched in 2008. Their small team is in Reston, Virginia and Naperville, Illinois. The firm focuses on BI & big data consulting & SI, Artificial Intelligence, AI Consulting, Custom Software Development, and more.Read More
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269Undisclosed1,000 - 9,999 employeesOrland Park, ILEstablished in 1996, Version 1 is a large New York, New York-based cloud consulting & SI company. Their team offers cloud consulting & SI and Custom Software Development.Read More
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270Undisclosed2 - 9 employeesChicago, ILEstablished in 2019, Strategy Here is a Market Research and Business Consulting company. Their team offers Market Research and Business Consulting.Read More
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