A coffin in a dream can represent a loss or an ending, such as the loss of a job or the end of a relationship. It can symbolize a desire to shut the past away and begin a new phase in life.
Dreaming about a coffin can signify a desire to hide difficult emotions or to get rid of an aspect of yourself that you do not like.
If you dream about a coffin you could be thinking about your own mortality.
You may dream about a coffin if someone you know has recently died or is dying, or on the anniversary of someone’s death.