What major companies offer a zero interest credit card?

Chase

Chase offers several cards with 0% intro APR periods, such as the Chase Freedom Unlimited (0% intro APR on purchases for 15 months) and the Chase Slate Edge (0% intro APR on purchases and balance transfers for 18 months).

Citi

Citi has cards like the Citi Simplicity (0% intro APR on purchases for 12 months and balance transfers for 21 months) and the Citi Diamond Preferred (0% intro APR on purchases for 12 months and balance transfers for 21 months).

American Express

Amex offers cards with 0% intro APRs, such as the Amex EveryDay Credit Card (0% intro APR on purchases for 15 months) and the Amex Cash Magnet Card (0% intro APR on purchases for 15 months).

Discover

Discover it Cash Back (0% intro APR on purchases for 15 months) and Discover it Balance Transfer (0% intro APR on balance transfers for 18 months) are popular zero interest options.

Bank of America

BofA offers the BankAmericard Credit Card with a 0% intro APR on purchases for 18 billing cycles.