Potassium channel subfamily K member 1 is a protein that in humans is encoded by the KCNK1 gene.
This gene encodes K<sub>2P</sub>1.1, a member of the superfamily of potassium channel proteins containing two pore-forming P domains. The product of this gene has not been shown to be a functional channel, however, and it may require other non-pore-forming proteins for activity.