To see Santa Claus in your dream indicates that you need to be more giving, accepting, and/or forgiving. You need to acknowledge and tend to some aspect of yourself. Alternatively, the dream means that you are reflecting on the good and bad things that you have done. 

To dream that you or someone is dressed as Santa Claus suggests that you need to treat others as you would like to be treated. Put yourself in someone else’s shoe and determine how they might feel.

To dream that you or someone is taking a picture with Santa Claus signifies your personal memories of the holidays.

To dream that Santa Claus is attending your wedding highlights the jolly occasion.