Formula Missae
Formula missae et communionis pro ecclesia Vuittembergensi is a 16th-century tract on the reform of the Latin liturgy composed by Martin Luther for Lutheran churches in Wittenberg, Germany.
Formula missae was not itself a new mass, but rather an outline and guide for using the existing missals and office books in Latin, with the primary difference being the omission of the Canon of the Mass. It was not prescriptive for Lutherans in general, but was widely influential as Lutherans sought to bring their worship into harmony with their theology.
It was followed three years later by the Deutsche Messe, a guide to mass in the vernacular, but the Latin liturgy for both mass and office continued in use in various Lutheran churches and cathedrals for more than two centuries afterward, still guided by the influence of Luther's Formula missae.