What is Oprah's last name?

Oprah Winfrey is an American television personality, actress, and entrepreneur whose syndicated daily talk show was among the most popular of the genre. She became one of the richest and most influential women in the United States. Winfrey excelled in the casual and personal talk-show format, and in 1984 she moved to Chicago to host the faltering talk show AM Chicago. Winfrey’s honest and engaging personality quickly turned the program into a success, and in 1985 it was renamed The Oprah Winfrey Show. Syndicated nationally in 1986, the program became the highest-rated television talk show in the United States and earned several Emmy Awards.

Source: Britannica