Circle-k

Circle-k, Ⓚ, or variant, may refer to:


 * A "k" enclosed in a circle, see enclosed alphanumerics
 * OK Kosher Certification, a "k" in a circle, found in kosher food packaging
 * Kosher certification agency symbol, a mark on foods indicating kosher status from a certification agency
 * Kashrut food practice emblem
 * Circle K, a convenience store chain
 * Circle K Sunkus, a chain of convenience stores in Japan
 * Circle K International, a service organization
 * Kiwanis, a service club whose logo has a K enclosed in a circle