Lawrence Welk (March 11, 1903 – May 17, 1992) was an American accordionist, bandleader, and television impresario, who hosted The Lawrence Welk Show from 1951 to 1982. The program was known for its light and family-friendly style, and the easy listening music featured became known as "champagne music" to his radio, television, and live-performance audiences.

Welk, a native of North Dakota who was born to German immigrants from Russia, began his career as a bandleader in the 1920s in the Great Plains. He gradually became more known throughout the country due to recordings and radio performances, and he and his orchestra were based in Chicago in the 1940s, where they had a standing residency at the Trianon Ballroom. By the start of the next decade, Welk relocated to Los Angeles and began hosting his eponymous television show, first on local television, before going national when the show was picked up by ABC in 1955. The show's popularity held through the following years, and with its focus on inoffensive entertainment, it was embraced by conservative audiences as an antidote to the counterculture of the 1960s. Welk vigorously sought to uphold this "clean-cut" reputation, and was deeply involved in managing both the on- and off-camera reputations of his show's performers.

In 1971, ABC cancelled The Lawrence Welk Show as part of a broader trend away from programs aimed at older or more rural audiences. Welk then continued his program in broadcast syndication until retiring in 1982. In the remaining decade of his life, he managed various business interests and packaged reruns of his show for broadcast on PBS, where it has continued to appear into the 21st century.