Coloring Book is an EP by the American post-hardcore band Glassjaw. The release was initially exclusively given away for free during the group's February–March 2011 tour, and was said to serve as a preview for Glassjaw's upcoming third studio album. The EP was later made available from Glassjaw's webstore on October 1, 2012 and comes in a red gatefold sleeve along with a pink-colored DVD, Coloring Book: Live at the Forum.

A coloring book (or colouring book, or colouring page) is a type of book containing line art to which a reader may add color using crayons, colored pencils, marker pens, paint or other artistic media. Coloring pages are not only exciting, but also useful for children and adults. Traditional coloring books and coloring pages are printed on paper or card. Some coloring books have perforated edges so their pages can be removed from the books and used as individual sheets. Others may include a story line and so are intended to be left intact. Today many children's coloring books feature popular cartoon characters. They are often used as promotional materials for animated motion pictures. Coloring books may also incorporate other activities such as connect the dots, mazes and other puzzles. Some coloring books also incorporate the use of stickers.