R. K. Post, also known as Randy Post (born September 28, 1968), is a creative artist. He is known for his illustrative work on various sourcebooks and reference materials, notably:
- Coruscant and the Core Worlds
- The New Jedi Order Sourcebook
- Power of the Jedi Sourcebook
- Ultimate Alien Anthology
- The Essential Guide to Alien Species
- Ultimate Adversaries
- Jedi Academy Training Manual
- Post's Website
- Randy Post on Wikipedia