Geraldo Michael Rivera (born Gerald Michael Rivera; July 4, 1943) is an American talk show host and political commentator who worked at the Fox News Channel from 2001 to 2023. He hosted the tabloid talk show Geraldo from 1987 to 1998. He gained publicity with the live 1986 TV special The Mystery of Al Capone's Vaults. Rivera hosted the news magazine program Geraldo at Large, hosts the occasional broadcast of Geraldo Rivera Reports (in lieu of hosting At Large). He served as a rotating co-host of The Five from 2022 to 2023.

Geraldo Michael Rivera was born Gerald Michael Rivera at Beth Israel Medical Center on July 4, 1943, in New York City, the son of Lillian (née Friedman; 1924–2018) and Cruz "Allen" Rivera (1915–1987), a restaurant worker and taxicab driver respectively. He is of Galician ancestry through his father, who was from Puerto Rico. His mother was Ashkenazi Jewish, while his father was Roman Catholic. Rivera was raised "mostly Jewish" and had a bar mitzvah ceremony. He grew up in Brooklyn and West Babylon, New York, where he attended West Babylon High School. Rivera's family was sometimes subjected to prejudice and racism, and his mother took to spelling their surname as "Riviera" to avoid having bigotry directed at them, although Riviera, Ribeira, Rivera, and Ribera are variations of the same name as spelled by Galician, Italian and Portuguese families.

When I was born, my mother filled in my birth certificate with the name Gerald Riviera, adding an extra "i" to my father's surname. She did the same thing for my sister Irene. Later, she would drop the pretense for my sister Sharon, only to pick it up again with the birth of my baby brother Craig. Whenever we asked about the inconsistencies, she would shrug shyly and joke her way out of it. "I just forgot how to spell it", she would say, and leave it at that. Underneath, I came to realize, she was deeply embarrassed over what was a clumsy attempt at an ethnic cover-up.

From 1961 to 1963, he attended the State University of New York Maritime College in where he was a member of the rowing team. Afterwards, he transferred to the University of Arizona, where he received a B.S. in business administration in 1965.

Following a series of jobs ranging from clothing salesman to short-order cook, Rivera enrolled at Brooklyn Law School in 1966. While a law student, he held internships with the New York County District Attorney under crime-fighter Frank Hogan and Harlem Assertion of Rights (a community-based provider of legal services) before receiving his J.D. near the top of his class in 1969. He then held a Reginald Heber Smith Fellowship in poverty law at the University of Pennsylvania Law School in the summer of 1969 before being admitted to the New York State Bar later that year.

After working with such organizations as the lower Manhattan-based Community Action for Legal Services and the National Lawyers Guild, Rivera became a frequent attorney for the East Harlem-based New York City chapter of the Young Lords, a Puerto Rican activist group, eventually precipitating his entry into private practice. This work attracted the attention of WABC-TV news director Al Primo when Rivera was interviewed about the group's occupation of a neighborhood church in 1969. Primo offered Rivera a job and he began to study introductory broadcast journalism under Fred Friendly in the Ford Foundation-funded Summer Program in Journalism for Members of Minority Groups at the Columbia University Graduate School of Journalism in 1970.

Rivera was hired by WABC-TV in 1970 as a reporter for Eyewitness News. In 1972, he garnered national attention and won a Peabody Award for Willowbrook: The Last Great Disgrace, his report on the neglect and abuse of patients with intellectual disabilities at Staten Island's Willowbrook State School and Rockland County's Letchworth Village, and he began to appear on ABC national programs such as 20/20 and Nightline upon their launches in 1978 and 1979 respectively. After John Lennon watched Rivera's report on the patients at Willowbrook, he and Rivera put on a benefit concert called "One to One" on August 30, 1972, at Madison Square Garden in New York City (which Yoko Ono released posthumously in 1986, as Live in New York City).

In July 1973, Rivera taped the pilot episode of Good Night America, a late-night newsmagazine that he hosted (and executive produced). It began its semi-regular airing from April 1974 to June 1977 as part of the ABC's Wide World of Entertainment program block. The show featured Ringo Starr's "It Don't Come Easy" as the theme. Good Night America tackled controversial topics of the era, including marijuana usage and the status of Vietnam War draft dodgers. The March 6, 1975 episode of the program, featuring Dick Gregory and Robert J. Groden, showed the first national telecast of the historic Zapruder film. All 33 episodes of Good Night America may be viewed and downloaded on Rivera's web site.