Allan Lyon


Allan Lyon, CMA, CPA, MSA, is a partner of audit and assurance services and has been with Sikich since 2009. Allan provides assurance, advisory, and accounting services, including financial statement audit, review and compilations, FAR 31 audits, consulting and agreed upon procedures, and more. Allan focuses on serving middle market, privately held manufacturing and distribution businesses, private equity and family offices, and professional service firms, such as architecture & engineering, law, consulting, marketing, and business service organizations.

Allan is passionate about building long-lasting trusted relationships with his clients by understanding their unique business situation and story. He delivers a personalized approach, senior-level guidance and resources, as well as practical solutions through effective and consistent communication. Allan also provides business advisory services in areas such as operational improvements, inventory management, costing and methodology, internal controls, mergers and acquisitions, and financial planning and forecasting.

Outside of the office, Allan enjoys spending time with his wife, watching his daughters dance, playing catch with his son, playing golf, and talking baseball.


  • American Institute of CPAs
  • Illinois CPA Society
  • Institute of Management Accountants


  • Bachelor’s Degree in Accounting, Illinois State University
  • Master of Science in Accountancy, Illinois State University
  • Certified Public Accountant (CPA)
  • Certified Management Accountant (CMA)