A chain in a dream can symbolize a feeling of being restricted.
If you dream of a chain of flowers, such as a daisy chain, you could be hoping for an end to your worries.
If you dream that you tie someone up with a chain, you could be hoping to defeat an adversary, but if someone else chains you up, you could be feeling that other people are making life too hard for you.
A chain in a dream can represent something that is restricting you in real life. If you dream about a chain or about chains, you could be feeling trapped in a situation or in a relationship.
Chains are a symbol of slavery and bondage, so if you dream that you are in chains, you may be feeling dominated or humiliated in real life. If you dream that someone else is in chains, you may want to dominate someone else, or you may be feeling frustrated because you believe that you lack power.
The links in a chain can represent relationships between different people, so a chain in a dream can represent a need to communicate with others in order to free yourself from an unhealthy situation.