O'Naghten Brothers is a boutique law firm renowned for its role as trusted general counsel, delivering comprehensive legal services and strategic planning to businesses and individuals. Specializing in commercial litigation and international arbitration, we provide proactive guidance on corporate governance, risk assessment, compliance, and long-term business strategies, ensuring clients are well-positioned for sustainable growth and dispute avoidance. Founded by brothers Juan T. O'Naghten and Luis M. O'Naghten, the firm draws upon decades of experience in high-stakes matters across the financial, energy, and corporate sectors, blending tactical litigation expertise with forward-thinking advisory services.

Headquartered in Miami, Florida, O'Naghten Brothers serves a diverse clientele, including closely held businesses, multinational corporations, and high-net-worth individuals. Our team of dedicated attorneys offers personalized, results-oriented representation, leveraging deep knowledge in domestic and cross-border issues to support strategic initiatives such as mergers, acquisitions, and operational planning. We uphold the highest standards of professionalism, integrity, and client service, approaching every engagement with precision, innovation, and a commitment to holistic solutions.

Key achievements include effective resolutions in complex arbitration and litigation involving international trade, contract disputes, and regulatory compliance, complemented by our pivotal contributions to clients' strategic planning and general counsel functions. Rooted in family values and professional excellence, O'Naghten Brothers fosters enduring partnerships, empowering clients to navigate legal complexities with confidence and foresight worldwide.

O'Naghten Brothers

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O'Naghten Brothers

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