Glenn Lyon

Glenn M. Lyon is an AV-rated business attorney and the founder of MacGregor Lyon, a law firm based in Atlanta focused exclusively on helping small businesses and startups thrive. He built his practice around a simple mission: to make business law clear, practical, and accessible for entrepreneurs who need trusted legal guidance without the confusion or cost of big-firm representation. Glenn combines decades of legal experience with a hands-on understanding of how businesses actually operate, giving clients advice that is not only sound in law but grounded in real-world business realities.

Before founding MacGregor Lyon, Glenn worked at King & Spalding, one of the nation’s most respected law firms. There, he developed a strong foundation in business litigation, contract negotiation, and complex transactional work. He later served as in-house counsel, where he advised executives on the legal and operational challenges that come with managing and scaling a company. This dual experience shaped his practical, business-first approach to legal problem-solving. Glenn understands what business owners need because he has sat on both sides of the table.

At MacGregor Lyon, Glenn serves as outside general counsel for small businesses across Georgia. His clients include startups, family-owned companies, and growing enterprises that rely on him for strategic legal support at every stage of their journey. His practice includes business formation and structure, contract drafting and negotiation, employment law compliance, mergers and acquisitions, and risk management. He has helped hundreds of Georgia business owners form LLCs, draft partnership and shareholder agreements, and navigate buy-sell transactions with clarity and confidence.

Clients often describe Glenn as approachable, responsive, and deeply invested in their success. He takes time to explain complex legal concepts in plain English so clients can make informed decisions without feeling overwhelmed. His counsel goes beyond immediate issues to anticipate future needs, helping businesses avoid disputes and protect their interests long-term. Whether advising a first-time founder or a seasoned entrepreneur preparing for an exit, Glenn tailors his advice to align with each client’s goals, values, and resources.

Glenn’s reputation for excellence has earned him recognition as Georgia’s Top Rated Lawyer and inclusion in Georgia Trend’s Legal Elite. He maintains the highest AV Preeminent rating for professional excellence and ethical standards. His clients and peers alike respect his ability to combine technical skill with practical judgment.

Outside of his law practice, Glenn is deeply connected to Atlanta’s entrepreneurial community. He often collaborates with local business organizations, advising founders on entity formation, investor readiness, and compliance with Georgia business laws. His work reflects his belief that every business, regardless of size, deserves access to clear, strategic legal guidance that supports growth and minimizes risk.

For Glenn, success is defined by the success of his clients. Through MacGregor Lyon, he continues to serve as a trusted advisor to Georgia’s business community, helping owners protect what they have built and plan confidently for what comes next.