Kenneth Charles Loach (born 17 June 1936) is a retired English filmmaker. His socially critical directing style and socialist views are evident in his film treatment of social issues such as poverty (Poor Cow, 1967), homelessness (Cathy Come Home, 1966), and labour rights (Riff-Raff, 1991, and The Navigators, 2001).

Loach's film Kes (1969) was voted the seventh greatest British film of the 20th century in a poll by the British Film Institute. Two of his films, The Wind That Shakes the Barley (2006) and I, Daniel Blake (2016), received the Palme d'Or at the Cannes Film Festival, making him one of only ten filmmakers to win the award twice. He also holds the record for the most films screened in the main competition at Cannes with 15.

Kenneth Charles Loach was born in Nuneaton, Warwickshire on 17 June 1936, the son of Vivien (née Hamlin) and John Loach. He attended King Edward VI Grammar School and joined the Royal Air Force at the age of 19. He later read law at St Peter's College, Oxford, graduating with a third-class degree. As a member of the Experimental Theatre Club, he directed a 1959 open-air production of Bartholomew Fair for the Shakespeare Memorial Theatre, in which he also starred as Dan Jordan Knockem.

Loach first worked as an actor in regional theatre companies and then as a director for BBC Television. His 10 contributions to the BBC's Wednesday Play anthology series include the docudramas Up the Junction (1965), Cathy Come Home (1966) and In Two Minds (1967). They portray working-class people in conflict with the authorities above them. Three of his early plays are believed to be lost. His 1965 play Three Clear Sundays dealt with capital punishment, and was broadcast at a time when the debate was at a height in the United Kingdom. Up the Junction, adapted by Nell Dunn from her book with the assistance of Loach, deals with an illegal abortion while the leading characters in Cathy Come Home, by Jeremy Sandford, are affected by homelessness, unemployment, and the workings of Social Services. In Two Minds, written by David Mercer, concerns a young schizophrenic woman's experiences of the mental health system. Tony Garnett began to work as his producer in this period, a professional connection which would last until the end of the 1970s.

During this period, Loach also directed the absurdist comedy The End of Arthur's Marriage, about which he later said that he was "the wrong man for the job". Coinciding with his work for The Wednesday Play, Loach began to direct feature films for the cinema, with Poor Cow (1967) and Kes (1969). The latter recounts the story of a troubled boy and his kestrel, and is based on the novel A Kestrel for a Knave by Barry Hines. The film was well received, although the use of Yorkshire dialect throughout the film restricted its distribution, with some American executives at United Artists saying that they would have found a film in Hungarian easier to understand. The British Film Institute named it No 7 in its list of best British films of the twentieth century, published in 1999.

During the 1970s and 1980s, Loach's films were less successful, often suffering from poor distribution, lack of interest and political censorship. His documentary The Save the Children Fund Film (1971) was commissioned by the charity, who subsequently disliked it so much they attempted to have the negative destroyed. It was only screened publicly for the first time on 1 September 2011, at the BFI Southbank. During the 1980s Loach concentrated on television documentaries rather than fiction, and many of these films are now difficult to access as the television companies have not released them on video or DVD. At the end of the 1980s, he directed some television advertisements for Tennent's Lager to earn money.

Days of Hope (1975) is a four-part drama for the BBC directed by Loach from scripts by dramatist Jim Allen. The first episode of the series caused considerable controversy in the British media owing to its critical depiction of the military in World War I, and particularly over a scene where conscientious objectors were tied up to stakes outside trenches in view of enemy fire after refusing to obey orders. An ex-serviceman subsequently contacted The Times newspaper with an illustration from the time of a similar scene.

Loach's documentary A Question of Leadership (1981) interviewed members of the Iron and Steel Trades Confederation (the main trade union for Britain's steel industry) about their 14-week strike in 1980, and recorded much criticism of the union's leadership for conceding over the issues in the strike. Subsequently, Loach made a four-part series named Questions of Leadership which subjected the leadership of other trade unions to similar scrutiny from their members, but this has never been broadcast. Frank Chapple, leader of the Electrical, Electronic, Telecommunications and Plumbing Union, walked out of the interview and made a complaint to the Independent Broadcasting Authority. A separate complaint was made by Terry Duffy of the Amalgamated Engineering and Electrical Union. The series was due to be broadcast during the Trade Union Congress conference in 1983, but Channel 4 decided against broadcasting the series following the complaints. Anthony Hayward claimed in 2004 that the media tycoon Robert Maxwell had put pressure on Central Television's board (Central was the successor to the original production company Associated Television), of which he had become a director, to withdraw Questions of Leadership at the time he was buying the Daily Mirror newspaper and needed the co-operation of union leaders, especially Chapple.^{[page needed]}