Credit cards that pull TransUnion are those that use TransUnion, one of the major credit bureaus, to assess an individual's creditworthiness during the application process. When you apply for such a credit card, the issuer will request your credit report and credit score from TransUnion to evaluate your financial history and determine whether you qualify for the card. This information helps the issuer make informed decisions about your credit limit, interest rates, and other terms associated with the card. Remember that the use of TransUnion for credit checks is just one aspect of the application process, and issuers may also consider information from other credit bureaus or factors when making their decision.