Napalm and Silly Putty is a 2001 book by comedian George Carlin. This book contains much of Carlin's stand-up comedy material. The title derives from one of the observations in the book: Carlin finds it interesting that the same race can invent something as fun and innocent as Silly Putty and something as deadly as napalm - the two have many similar properties. The title is also an allusion to the type of thoughts that occupy his time, saying, "on one hand I kinda like it when a lot of people die, but on the other hand, I always wonder how many unused frequent flyer miles they had."

The hardcover edition of Napalm and Silly Putty was on the New York Times Bestseller List for 20 straight weeks. The following year, the paperback edition was published. Both editions were published by Hyperion.

As of April 2002, the hardcover edition had sold over 375,000 total copies.

In May 2001, the book was released as an audiobook, in both CD and cassette tape formats. The audiobook received a Grammy award, Carlin's fourth, in February 2002. The audiobook edition was published by Highbridge Audio.