If you dreamed of seeing a spy, then such dream shows the mistrust you have towards the others. It could also mean that you are the person who likes to be interested in other people endeavors and lives. Probably you found out something that has nothing to do with you or something you were not supposed to know. If you saw somebody spying on you, then such dream warns you to be careful with those you are surrounded by. On the other hand, the dream may be an indication of your tendency to do things in a rush without thinking of the circumstances.
Spy dream meaning
Read more about dreaming of Spy in other dream meanings interpretations.