Robert Wood "Woody" Johnson IV (born April 12, 1947) is an American businessman, philanthropist, and diplomat who is currently serving as United States Ambassador to the United Kingdom. He is a great-grandson of Robert Wood Johnson I (co-founder of Johnson & Johnson). Alongside his brother, Christopher, he is the owner of the New York Jets of the National Football League.
Johnson became involved in charitable organizations full-time in the 1980s. He is a member of the Council on Foreign Relations. His family has been affected by both lupus and juvenile diabetes, which motivated Johnson to take a role in raising funds to prevent, treat, and cure autoimmune diseases.
He has led efforts on Capitol Hill and at the National Institutes of Health to increase research funding for these diseases and personally contributed to causes related to diabetes, after his daughter, Casey, was diagnosed with the disease. He started a research foundation, the Alliance for Lupus Research, after his daughter Jaime was found to have lupus.