K'Nex ( ) is a construction toy system created by Joel Glickman of The Rodon Group. It was first introduced in America in 1992. K'Nex is designed and produced by K'Nex Industries Inc. of Hatfield, Pennsylvania. K'Nex was purchased by Florida-based company Basic Fun! in 2018.

The toy's building system consists of interlocking plastic rods, connectors,