I have lost a left ear air pod. A2566. Can I buy another single one

Hello primroseinspring,

Thanks for posting in the Apple Support Communities.

Since you've lost the left AirPod, you can purchase a replacement to be paired with your charging case. Check out the following resource for assistance with this: AirPods Service & Repair - Apple Support

Replace a lost AirPod

Did you lose an AirPod or your Charging Case? You can buy a replacement for a left or right AirPod or the Charging Case. Your replacement will be new.

AppleCare+ for Headphones does not cover lost or stolen AirPods.

If you need more assistance with setting up service, contact Apple Support.

Have a great day!