Good logos are simple and nothing is more simple than a geometric shape.

Below are 25 of the most famous and most inspiring logos that make use of a square. Some of these logos use a stylized square as a graphical element, some use it as a simple square to enforce dominance.

The simplicity of these logos is what makes them memorable. If you come across any more that you think are exceptional, please link to them in the comments.

Take a look at 50 Excellent Circular Logos at Web Designer Depot, the inspiration for this post.