What does it mean to dream about cousin?
A cousin often stands for a quality you associate with that branch of the family or with shared youth, a familiar yet slightly distant side of yourself, rather than the literal relative.
Four ways to read it
Each reading below comes from a named tradition and a cited source, so you can see where it came from and decide what fits your dream.
Freud
Freud would read a cousin as a near double within the family, a figure onto whom feelings about a sibling or the self can be shifted at a comfortable distance. He would ask what familiar wish or rivalry the figure helps express.
After Freud, The Interpretation of Dreams (Brill trans., 1913), public domain.Jung
Jung might see a cousin as a mirror of the self, close enough to feel familiar but distant enough to carry traits you have not fully claimed. The figure can reflect a side of your character glimpsed in someone like you.
Jungian concept (our summary).Modern
Continuity ties a cousin to your real relationship and shared history, or to the sense of family resemblance and comparison. The figure often appears when belonging or a remembered closeness is on your mind.
Continuity hypothesis (our summary).Mythological
Cousins and kin of the same generation fill many sagas as companions, allies, and sometimes rivals bound by blood. The figure tends to embody a bond of kinship that lies between sibling and stranger.
Rosmerta Publishing editorial synthesis (after Bulfinch; Brewer).