Robert Keith Orton Sr. was an American professional wrestler. The patriarch of the Orton wrestling family, his two sons Bob Orton Jr. and Barry Orton, and grandson Randy Orton, have all wrestled professionally. To distinguish between him and his son, he is also known as Bob Orton Sr. Bob Orton Sr. was often referred to by his nickname "The Big O".

Robert Keith Orton Jr., known by the ring name "Cowboy" Bob Orton, is an American semi-retired professional wrestler. He is a son of professional wrestler Bob Orton Sr., the brother of professional wrestler Barry Orton, and the father of professional wrestler Randy Orton. He is best known for his time in the World Wrestling Federation,, including his involvement in the main event of the inaugural WrestleMania. He has also wrestled for several promotions in the United States, Japan, and other countries.