The King and I is the fifth musical by the team of Rodgers and Hammerstein. It is based on Margaret Landon's novel Anna and the King of Siam (1944), which is in turn derived from the memoirs of Anna Leonowens, governess to the children of King Mongkut of Siam in the early 1860s. The musical's plot relates the experiences of Anna, a British schoolteacher who is hired as part of the King's drive to modernize his country. The relationship between the King and Anna is marked by conflict through much of the piece, as well as by a love to which neither can admit. The musical premiered on March 29, 1951, at Broadway's St. James Theatre. It ran for nearly three years, making it the fourth-longest-running Broadway musical in history at the time, and has had many tours and revivals.

A governess is a term for a woman employed as a private tutor, who teaches and trains a child or children in their home. A governess often lives in the same residence as the children she is teaching. In contrast to a nanny, the primary role of a governess is teaching, rather than meeting the physical needs of children; hence a governess is usually in charge of school-aged children, rather than babies.