Roe is the eggs or is the egg-filled ovary of fish and certain crustaceans; thus, lobster roe is eggs from the ovary of a lobster.

Roe or hard roe is the fully ripe internal ovaries or 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.

Caviar is a name for processed, salted roe consumed as a delicacy.

The term soft roe or white roe denotes fish milt.