Sir Trevor Lawson McDonald (born George McDonald; 16 August 1939) is a Trinidadian-British newsreader and journalist, best known for his career as a news presenter with Independent Television News (ITN).

McDonald began his career working as a print and broadcast journalist for Naparima College's Blue Circle Network. He began his professional career with Radio Trinidad as a reporter and worked as a news reader and sports journalist for Trinidad Television. McDonald was employed by BBC Radio in 1969 as a producer, based in London but still broadcasting to the Caribbean. In 1973, he began his long association with ITN as a general reporter and was also ITN's first black reporter. McDonald was promoted in 1992 as the sole presenter of News at Ten and became a well-known face on British television screens. He was the presenter of the current affairs programme Tonight with Trevor McDonald and a series of documentaries for ITV.

McDonald was knighted in 1999 for his services to journalism and was appointed a deputy lieutenant of Greater London in 2006. He is a recipient of the National Television Award for Special Recognition and the BAFTA Fellowship. In 2006, the British public ranked McDonald number 31 in ITV's poll of TV's 50 Greatest Stars.

McDonald was born as George McDonald to a working-class family on 16 August 1939, in San Fernando, Trinidad, an island in the West Indies that was a British colony at the time. He is the son of Josephine and Lawson McDonald, a self-taught engineer from Grenada who moved to Trinidad to work on an oil refinery. McDonald is of Dougla heritage, his mother being of African descent and his father being of Indian descent. He grew up in a poor household in the fishing village of St. Margaret in the south of Trinidad, and is the oldest of four children in his family. McDonald did not receive much of an education at school, going against his parents' wishes, but they ensured his English was of high standard by learning the speech of the announcers working at the BBC World Service. His father supplemented the small income by mending shoes and keeping pigs in his spare time to fund the family's education.

Although his mother wanted him to become a lawyer, he began working in broadcasting through Naparima College's Blue Circle Network in San Fernando. McDonald's professional work started when he was a radio reporter for Radio Trinidad, news presenter and sports journalist for Trinidad Television as well as newspapers and radio in the early 1960s. He became a producer for both the BBC World Service and the BBC Caribbean Service in 1962. In 1969, McDonald moved to London and was employed by the BBC World Service as a producer at Bush House, but still broadcast to the Caribbean.

Finding he was slow-moving at progressing and eager to advance his career, at the urging of his colleagues in 1973, he was employed by Independent Television News (ITN) editor Nigel Ryan to work at the news organisation as a general reporter and was also ITN's first black reporter. Aware of this fact, he requested that, as part of his employment with ITN, that he was not "to do token black stories" in Brixton. McDonald had been approached by BBC Television after they claimed they heard of his work in television in Trinidad. He was told the corporation was under pressure from the Race Relations Board to employ more black reporters but declined because he wanted to be employed on merit and not because of his race. McDonald worked as a Northern Ireland correspondent reporting on The Troubles, and later became a sports correspondent from 1978 to 1980, reporting on events such as the 1978 FIFA World Cup matches involving Scotland.

He ultimately concentrated on international politics between January 1980 and 1982 as diplomatic correspondent and newsreader. This came after Ryan suggested that McDonald "be like Sandy Gall" and travel the world as a reporter, combining that role with reading the news on occasion. From 1982 to 1987 he was employed as a diplomatic correspondent and newsreader of the ITN-produced Channel 4 News evening bulletin, but returned to ITV in early 1989, presenting the Early Evening News and rotated that bulletin along with the weekend news duties with Fiona Armstrong. He conducted the first interview with Nelson Mandela after his release from prison and interviewed Saddam Hussein just after the Iraqi invasion of Kuwait.

McDonald was promoted on 9 November 1992 as the main presenter of News at Ten when the bulletin was revamped from its two-presenter format to a one-newsreader format after market research determined that audiences preferred him over younger colleagues. He became a well-known face on British television screens as a result. McDonald remained with ITN when News at Ten was axed by ITV on 5 March 1999 in order to broadcast more films and drama. He went on to present the new ITV Evening News from 1999 to 2001. News at Ten was briefly relaunched for three nights a week on 22 January 2001, to which McDonald returned as a presenter. He presented the ITV News at 10.30 following News at Ten's second axing in January 2004.