Intro

I needed a way to find my AWS Organization ARN (not just the ID). The AWS console shows OU ARNs, but not the main organization’s ARN.

To find the org ARN, you can use the following CLI command documented by AWS here:

aws organizations describe-organization --query 'Organization.Arn'

Or you can just use the appropriate values with the format below:

arn:aws:organizations::ROOT_ACCOUNT_ID:organization/ORG_ID