The Bustan is a book of poetry by the Persian poet Saadi, completed in 1257 CE and dedicated to the Salghurid Atabeg Sa'd I or Sa'd II. Bustan is considered one of two major works of Saadi.

It was Saadi's first work, and its title means "the orchard". The book contains the fruits of Saadi's long experience and his judgements upon life, and is illustrated by a vast collection of anecdotes. It includes accounts of Saadi's travels and his analysis of human psychology. He often mentions his accounts with fervour and advice similar to Aesop's fables. The book has ten chapters regarding the issues of ethics and training; namely, justice, mercy, love, humility, contentment, devotions, education, gratitude, repentance, and praying.

This book is one of the 100 greatest books of all time according to The Guardian. It is composed in mathnawi style (rhyming couplets), and has been translated into English. The Bustan was translated into Dutch in 1688 by Daniel Havart.