Mo's Restaurants is an American restaurant chain located on the Oregon Coast and headquartered in Newport, Oregon. Mo's are named after their original owner Mohava "Mo" Niemi, who was once described as "the stuff of legend in Newport".

Mo's restaurants serve primarily seafood and have long been noted for their New England style clam chowder, their own locally raised Yaquina Bay oysters and for their casual and friendly atmosphere.

Mo's first opened on the Newport bay front in 1946 as "Freddie & Mo's"—a 24 hour restaurant that served the local loggers and fisherman such fare as spaghetti and steaks. Niemi's business partner Freddie Kent became ill a few years later and Niemi bought out her partner's shares of the restaurant. In the following years Mo's served more and more seafood, the clam chowder recipe evolved over time as the cooks would vie with each other to produce a better version.

Over time Mo's would become a favorite, not just of locals, but of tourists and celebrities as well. Mo's second husband, retired fisherman Kaino "Dutch" Niemi along with friends often gathered at a table contributing to the "family" atmosphere of the restaurant.