What is a Carrier? Carrier[kar-ee-er]noun1.The Carrier is the insurance company that provides a specific Policy and is the company that a policyholder will pay Premiums to. The Carrier is ultimately responsible to pay out Claims. Share | Have A Question About This Topic? Name Email Address Question Thank you! Oops! Related Contents If You're In An Accident Do you know what to do if you're in a car accident? What is Underwriting? Do you know what Underwriting is? Long-Term-Care Protection Strategies The chances of needing long-term care, its cost, and strategies for covering that cost.