Roe or hard roe is the fully ripe internal egg masses in the ovaries, or the released external egg masses of fish and certain marine animals, such as shrimp, scallop and sea urchins. As a seafood, roe is used both as a cooked ingredient in many dishes and as a raw ingredient. The roe of marine animals, such as the roe of lumpsucker, hake  and salmon, is an excellent source of omega-3 fatty acids. Roe from a sturgeon or sometimes other fishes is the raw base product from which caviar is made.

Roe or hard roe, is the fully ripe egg masses of fish and certain marine invertebrates.