Does circle K have a credit card for gas?

No. Circle K is a convenience store chain. Each gas station is affiliated with different gas providers. Look at the signs at your local gas station and see. Some are exclusive with Shell etc. Although Circle K corporate now has Easy Rewards, and Easy Pay. Easy Rewards is their Loyalty card to receive great discounts and earn rewards for dollars spent. Easy Pay works like a Credit Card at the pump, both have to be registered online when you get them to receive full benefits. The Easy Pay you connect a Debit card or checking account to and when it is used at the pumps or in the store you can use it like a credit card and it will debit from the connected checking accounts.