The Standard Code of Parliamentary Procedure is a book of rules of order. It is the second most popular parliamentary authority in the United States after Robert's Rules of Order. It was first published in 1950. Following the death of the original author in 1975, the third (1988) and fourth (2001) editions of this work were revised by a committee of the American Institute of Parliamentarians. In April 2012, a new book, entitled American Institute of Parliamentarians Standard Code of Parliamentary Procedure (AIPSC) was released, followed by a second edition in 2023.