Ruled composition notebooks, also known as "ruled paper exercise books", have multiple lines drawn in them.

These lines are usually separated by a fixed distance from one another and they often serve as guides that determine the part of a paper, where the composer is allowed to write. The lines are mostly ruled horizontally or vertically, although other directions also exist.

Ruled notebooks are a common sight in schools, from kindergarten to college. This demonstrates how vital ruled notebooks are to the education of any society. Despite the proliferation of electronic substitutes such as iPad, laptop computers, etc., ruled notebooks are still very much relevant.

In order to satisfy various applications of lined journal papers, various types of ruled paper notebooks are in existence as listed below

1. College ruled composition notebook

2. Writing notebook for kindergarten

3. Quad composition notebook

4. Isometric grid notebook

5. Polar grid notebook

6. Cursive writing notebook