In waking life marriage represent a commitment for two parties to join together, and in fact the word marriage literally means joining two things or elements together.
So, dreaming about marriage can be connected with an upcoming commitment in your waking life, which may actually be a marriage or it may be the expectation of a future joining of ideas or a new direction involving another person?
If there was a sense of foreboding in the dream it suggests you are worried about a future commitment.
If you are excited and happy in the dream it could be a sign that your future endeavors with a new person or situation will be fruitful?
Of course, let’s not forget, that wish-fulfillment could be at play here – your dreaming mind may simply be fantasizing about getting married, or attending a wedding!