is a tire and auto service shop headquartered in Palm Beach Gardens, Florida.

Big O Tires is one of North America's largest retail tire franchisors, with more than 450 independently owned and operated locations extending through 23 states primarily in the Western and Midwestern United States.

In 2018, Michelin North America Inc. (MNAI) and Sumitomo Corporation of Americas (SCOA) announced a definitive agreement to combine their respective North American replacement tire distribution and related service operations in a 50–50 joint venture.

Big O Tires remains a wholly owned subsidiary of TBC Corporation.

The amount equaled 25% of Goodyear's advertising budget in the states where Big O operated.