restaurant chain

Chain stores (also called retail chains) are a range of retail outlets which share a brand and central management, usually with standardized business methods and practices. They are a type of business chain. Such stores may be branches owned by one company or franchises owned by local individuals or firms and operated under contract with the parent corporation. Features common to all chains are centralized marketing and purchasing, which often result in economies of scale, meaning lower costs and presumably higher profits.
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restaurant chain
n : a chain of restaurants

group of restaurants bearing the same name and belonging to the same owners

チェーンレストラン, 店名と所有者が同じのレストラン グループ

chaîne de restaurants (groupe de restaurants du même nom appartenant au même propriétaire)