Charles Kenneth Horne (27 February 1907 – 14 February 1969) was an English comedian and businessman. He is perhaps best remembered for his work on three BBC Radio series: Much-Binding-in-the-Marsh (1944–1954), Beyond Our Ken (1958–1964) and Round the Horne (1965–1968).

The son of a clergyman who was also a politician, Horne had a burgeoning business career with Triplex Safety Glass, which was interrupted by service with the Royal Air Force during the Second World War. While serving in a barrage balloon unit, he was asked to broadcast as a quizmaster on the BBC radio show Ack-Ack, Beer-Beer. The experience brought him into contact with the more established entertainer Richard Murdoch, and the two wrote and starred in the comedy series Much-Binding-in-the-Marsh. After demobilisation Horne returned to his business career, and kept his broadcasting as a sideline. His career in industry flourished, and he later became the chairman and managing director of toy manufacturers Chad Valley.

In 1958 Horne suffered a stroke and gave up his business dealings to concentrate on his entertainment work. He was the anchor figure in Beyond Our Ken, which also featured Kenneth Williams, Hugh Paddick, Betty Marsden and Bill Pertwee. When the programme came to an end in 1964, the same cast recorded four series of the comedy Round the Horne.

Before the planned fifth series of Round the Horne began recording, Horne died of a heart attack while hosting the annual Guild of Television Producers' and Directors' Awards; Round the Horne could not continue without him and was withdrawn. The series has been regularly re-broadcast since his death. A 2002 BBC radio survey to find listeners' favourite British comedian placed Horne third, behind Tony Hancock and Spike Milligan.

Kenneth Horne was born Charles Kenneth Horne on 27 February 1907 at Ampthill Square, London. He was the seventh and youngest child of Silvester Horne and his wife, Katherine Maria née Cozens-Hardy. Katherine's father was Herbert Cozens-Hardy, the Liberal MP for North Norfolk who became the Master of the Rolls in 1907 and Baron Cozens-Hardy on 1 July 1914. Silvester, a powerful orator, was a leading light in the Congregationalist movement, as minister at the Whitefield's Tabernacle, Tottenham Court Road from 1903 and, from 1910, chairman of the Congregational Union of England and Wales. Between 1910 and 1914 he was the Liberal Member of Parliament (MP) for Ipswich.

By 1913 Silvester was suffering from continual poor health. He resigned his position at the tabernacle on medical advice in January 1914, and intended to resign his parliamentary seat. On a speaking tour of the US and Canada he lectured at Yale University, and then travelled to Toronto; as the ferry he took entered harbour, he collapsed and died, aged 49; Horne was aged seven at the time. From September that year Horne attended St George's School, Harpenden as a boarder—the seventh of the Horne children to attend the school. Although he was not strong academically, he developed into a good sportsman, representing the school in rugby and cricket, and during the summer holidays took part in the Public Schoolboys Lawn Tennis Championship at Queen's Club; in his final appearance in 1925 he was knocked out by the future Wimbledon finalist Bunny Austin.

Horne enrolled at the London School of Economics in October 1925, where his tutors included Hugh Dalton and Stephen Leacock; he was dissatisfied with his time at the university and called Leacock "one of the most boring lecturers I ever came across". During the general strike in 1926 volunteers were asked to enlist at the Organisation for the Maintenance of Supplies to take over the essential services; Horne joined, and spent two days driving a London bus before the strike was called off. Through the influence and generosity of an uncle, Austin Pilkington of the Pilkington glassmaking family of St Helens, he was able to enrol at Magdalene College, Cambridge, in October 1926. He committed himself to the sporting side of life and represented the college at rugby, and in the relay team alongside the future Olympic gold medallist Lord Burghley. He also played tennis for the university, partnering Bunny Austin. Distracted by his athletic exploits, he neglected his studies and was sent down in December 1927.

Austin Pilkington was aggrieved at Horne's failure to make the most of the opportunity he had provided, and decided against offering the young man a post in the family firm. Despite the disappointment, through his contacts within the industry, he secured for the young Horne an interview with the Triplex Safety Glass Company at King's Norton, a district of Birmingham. Horne's sporting record commended him to the manager of the Triplex factory, and he was taken on as a management trainee on a modest salary. In September 1930, despite his unimpressive finances, he married Lady Mary Pelham-Clinton-Hope, daughter of the 8th Duke of Newcastle. The marriage was happy at first, but had broken down by 1932. Mary applied for an annulment in November 1932; she declared the reason was "the incapacity of the respondent [Charles Kenneth Horne] to consummate the marriage", which was dissolved in 1933, although the two remained on friendly terms thereafter.