八百屋（日语读作やおや）是日本对贩卖蔬果的店铺的通称，即蔬果店。

关于八百屋此名称的由来未有定论，有说「八百」是喻其商品众多之意，原本叫作「八百物屋（读作やおものや）」或「八百屋店（读作やおやだな或やおやみせ）」，后来简化为「八百屋」；又有说江户时代称蔬果店为「青屋（读作あおや）」，后来读音讹变为「やおや」，对应的汉字也借字为「八百屋」。

日本曾有一家大型连锁超级市场八百半，即是由经营八百屋起家。

A greengrocer, also called a produce market or fruiterer, is a retail trader in fruit and vegetables; that is, in green groceries. Greengrocer is primarily a British and Australian term, and greengrocers' shops were once common in cities, towns and villages. They have been affected by the dominant rise of supermarkets, but many can be found managing small shops or stores in towns and cities and in some villages. Greengrocers can also be found in street markets and malls, or managing produce departments at supermarkets. Such traders typically handle the entire business of buying, selling, and book-keeping themselves.