鱼子酱是用从鱼身上的鱼卵制成的酱，是「西方三大珍味」（另两者为鹅肝、松露）之一。几乎所有种类的鱼卵都可被做成鱼子酱，但严格来说鲟鱼的鱼卵才是鱼子酱。最上等的鱼子酱是产自里海中的鲟鱼贝鲁嘉鲟、ASETRA、SEVRUGA的黑色鱼卵做成的。鱼子酱可以放入汤中或夹面包来吃。

因为俄罗斯和伊朗两国靠近里海，所以两国生产的上等鱼子酱占全世界市场的95％，俄罗斯的西伯利亚地区的阿穆尔河（即黑龙江）中也生产一种鲟鱼的鱼子酱。近年中国大陆的黑龙江省和浙江也生产鱼子酱，与俄罗斯出产的品种相同，但价格相对便宜，成为市场新宠。单点多以小圆煎饼与发泡鲜奶油作搭配。

Caviar (From Persian خاويار: Xāviār ) is a delicacy consisting of salt-cured fish-eggs of the Acipenseridae family. The roe can be "fresh" (non-pasteurized) or pasteurized, with pasteurization reducing its culinary and economic value.

Traditionally, the term caviar refers only to roe from wild sturgeon in the Caspian and Black Sea (Beluga, Ossetra and Sevruga caviars). Depending on the country, caviar may also be used to describe the roe of other fish such as salmon, steelhead, trout, lumpfish, whitefish, carp, and other species of sturgeon.