Ferrell was born in Irvine, California, the son of Betty Kay (née Overman), a teacher who taught at Old Mill School elementary school and Santa Ana College, and Roy Lee Ferrell, Jr., a musician with The Righteous Brothers. His parents were both natives of Roanoke Rapids, North Carolina, and moved to California in 1964; Ferrell has Irish ancestry. Ferrell has a younger brother, Patrick. When he was 8, his parents divorced. Ferrell said of the divorce, "I was the type of kid who would say, 'Hey Look at the bright side! We'll have two Christmases.'" The divorce was amicable and both parents were committed to their children. The biggest problem was Lee's line of work. As a person in show business, his paychecks were never steady and he was gone from home months at a time. Growing up in the environment made Ferrell not want to go into show business, but get a steady job.
Will first attended school at Turtle Rock Elementary and later attended Rancho San Joaquin Middle School, both in Irvine. He attended University High School in Irvine, and was a kicker for the school's varsity football team. He was also on the soccer team and captain of the basketball team, and served on student council. As a joke, he started the reptile club (even though he didn't know anyone who owned one), but the club only lasted for two meetings.
Will first attended school at Turtle Rock Elementary and later attended Rancho San Joaquin Middle School, both in Irvine. He attended University High School in Irvine, and was a kicker for the school's varsity football team. He was also on the soccer team and captain of the basketball team, and served on student council. As a joke, he started the reptile club (even though he didn't know anyone who owned one), but the club only lasted for two meetings.