Fowler was born in Toxteth, Merseyside, England and brought up in the inner city area of Liverpool, England. At this time he was known as Robert Ryder, his mother's surname. He lived in Toxteth at the time of the 1981 Toxteth riots, when he was six years old. As a youngster he supported Everton F.C., regularly travelling to Goodison Park. He played regularly for schoolboy team Thorvald, and once scored 16 times in a 26–0 rout.
In 1985 a 10-year-old Fowler was selected for Liverpool Schoolboys and was spotted by Liverpool scout Jim Aspinall. He began training with Liverpool once a week and signed schoolboy forms with the club. On leaving school in 1991 he signed as a YTS trainee, and turned professional on his 17th birthday less than a year later.
In 1985 a 10-year-old Fowler was selected for Liverpool Schoolboys and was spotted by Liverpool scout Jim Aspinall. He began training with Liverpool once a week and signed schoolboy forms with the club. On leaving school in 1991 he signed as a YTS trainee, and turned professional on his 17th birthday less than a year later.