Introduction to Algorithms is a book on computer programming by Thomas H. Cormen, Charles E. Leiserson, Ronald L. Rivest, and Clifford Stein.

The book is described by its publisher as "the leading algorithms text in universities worldwide as well as the standard reference for professionals".

[6] In the preface, the authors write about how the book was written to be comprehensive and useful in both teaching and professional environments.

With the second edition, the predominant color of the cover changed to green, causing the nickname to be shortened to just "The Big Book (of Algorithms).

[9] The mobile depicted on the cover, Big Red (1959) by Alexander Calder, can be found at the Whitney Museum of American Art in New York City.