Buddy Buddy is a 1981 American comedy film directed by Billy Wilder that stars Jack Lemmon, Walter Matthau, Paula Prentiss and Klaus Kinski. The screenplay by Wilder and I.A.L. Diamond is based on the 1973 French language film L'Emmerdeur, which screenwriter Francis Veber had adapted from his play Le contrat. The film proved to be the last directed by Wilder.