The .218 Bee / 5.7x34mmR is a .22 caliber centerfire rifle cartridge designed for varmint hunting by Winchester in 1937.

The cartridge was originally chambered in the Winchester Model 65 lever-action rifles, which may have ultimately led to its lack of popularity.

The .218 Bee cartridge was designed by Winchester for use in their Model 65 lever-action rifles.

There was some question about the accuracy of the .218 Bee as compared to the .222,[citation needed] but that was likely due to the difference of inherent accuracy between the bolt-actions rifles commonly chambered for the .222 and the lever-actions commonly chambered for the .218 Bee.

Although not in common use, it is still a very effective cartridge in its class, for small to medium varmints out to about 200 yards (180 m).