The Go gopher was designed by Renee French.
The design is licensed under the Creative Commons 3.0 Attributions license.
Read this article for more details.

Where can I find more gopher illustrations?

• gophers in the Go repository
• gopher vector
• gopher 3d
• golang graphics
• print-ready swimming gopher
• go gopher vector
• gopher gala
• gophericons