Spyderco is a knife company founded by Sal Glesser in the United States. They pioneered the opening hole in the blade of a folding knife. This allows one-hand manual opening of the knife without the need for added thumb-studs or other features.[1] It is headquartered in Golden, Colorado. It was founded in 1978.

Spyderco Military
Spyderco Endura 4, which is made in Japan

A large part of the firm's knife production is outsourced to foreign contractors in countries such as Japan, Taiwan, Italy, and China.[2]

They have pioneered the use of new types of steel alloys and handle materials, also materials such as fiberglass reinforced nylon polymer.


  1. Delavigne, Kenneth 2000. Spyderco Story: the new shape of sharp. Colorado: Paladin Press. p. 312. ISBN 1-58160-060-7
  2. "SpydercoSource Sort by Manufacture Location". Archived from the original on 2009-11-27.

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