Here is a logo for the LISP programing language. [see Xah Emacs Lisp Tutorial]
The image is copyright © 2007 by Xah Lee. I release it into public domain.
Note: This logo is a redrawing of a image found on the web. This one:
I do not know who is its copyright owner. It appears to be a logo originating from http://alu.org/ (Association of Lisp Users). If you are its copyright owner, trademark owner, or designer, please let me know.