A Book of Discipline or Book of Order is a book detailing the beliefs, practices, doctrines, laws, organisational structure and government of many Christian denominations. They are often re-written by the governing body of the church concerned due to changes in society and the church.

Examples of books of discipline include:

• Book of Discipline of the Church of Scotland and Book of Common Order
  Book of Common Order
  -Genevan Book of Order:The Genevan Book of Order, sometimes called The Order of Geneva or Knox's Liturgy, is a directory for public worship in the Reformed Church of Scotland. In 1557 the Scottish Protestant lords in council enjoined the use of the English Common Prayer, i.e. the Second Book of...
  
   of the Church of Scotland
• Most organisations of Presbyterian churches have their own Book of Discipline
• Book of Discipline for the United Methodist Church
  Book of Discipline (United Methodist)
  The Book of Discipline constitutes the law and doctrine of the United Methodist Church. It follows similar works for its predecessor denominations....
  
  .
• Book of Discipline of the Religious Society of Friends (Quakers) - each Yearly Meeting
  Yearly Meeting
  Yearly Meeting is a term used by members of the Religious Society of Friends, or Quakers, to refer to an organization composed of a collection of smaller, more frequent constituent meetings within a geographical area. These constituent meetings go by various names such as Quarterly Meetings, which...
  
  (national organisation of Quakers) publishes its own Book of Discipline, which may be titled the Book of Discipline or Faith and Practice or some other name.