Lost one AirPod can I replace it?

Refer to: AirPods Repair & Service - Apple Support

- Includes replacement cost (go to Get An Estimate at the bottom). Note the distinction between lost and damaged items. Neither the warranty nor AppleCare+ helps with the cost of Airpods that are lost or stolen. The cost for damaged Airpods may be lessened by any 'AppleCare+ For Headphones' coverage you may have.

Learn how to set up your replacement.

Set up your replacement AirPods or charging case - "When you get your replacement, follow these steps to use your AirPods again." --> Set up your replacement AirPods or charging case - Apple Support