If I have apple care for my Mac pro and my charger got stolen is it covered under warranty?

mayfromcarson wrote:

Does warranty cover a stolen charger for a Mac pro?

Apple has just introduced a new AppleCare+ plan

Unfortunately for you it is not retroactive:

About AppleCare+ with Theft and Loss claims - Apple Support

Report a lost or stolen Apple product - Apple Support

Warranty does not cover loss or theft.

No.

mayfromcarson wrote:

Does warranty cover a stolen charger for a Mac pro?

For that, you need to buy insurance from a provider.

Apple will repair or replace (at their option) parts found to be defective in materials or workmanship...

Theft is not a defect. Check with your homeowner's or renter's insurance carrier.