Kenneth Blanchard is an American author and management expert, best known for his influential book, The One Minute Manager, co-authored with Spencer Johnson. This book, published in 1982, focuses on effective management techniques and has sold millions of copies worldwide, making it a staple in business literature. In addition to his writing, Blanchard is a sought-after speaker and consultant, specializing in leadership and organizational development. He has founded several companies, including The Ken Blanchard Companies, which provides training and resources for businesses looking to improve their management practices and employee engagement.