Family Businesses represent a main part of entrepeneurial activity in Argentina and in the USA. Founders and their family members do not always know or understand the importance of their initial legal choices in planning ahead for the future of the company. This book presents a comprehensive analysis of the choices of legal entity that founders of family businesses can find in the legal regulation of Argentina and the USA. We hope this work may help both legal advisors and entrepeneurs themselves to better analyze their options.