John Lloyd Wright was an American architect and toy inventor. Born in Oak Park, Illinois, Wright was the second-oldest son of famed architect Frank Lloyd Wright. John Lloyd Wright became estranged from his father in 1909 and subsequently left his home to join his brother on the West Coast. After unsuccessfully working a series of jobs, he decided to take up the profession of his father in 1912. Shortly afterward, he was able to reconnect with his father, who took John under his wing. Differences in opinion regarding the Imperial Hotel, Tokyo caused the pair to again become disunited.

Lincoln Logs are an American children's construction toy consisting of square-notched miniature lightweight logs used to build small forts and buildings. They were invented around 1916 by John Lloyd Wright, second son of well-known architect Frank Lloyd Wright. Lincoln Logs were inducted into the National Toy Hall of Fame in 1999. They are named after U.S. president Abraham Lincoln, who once lived in a log cabin.