A circus signifies an arena, where we can keep an eye on our instincts and see our ability to keep them in control. It is about everything that takes our passion.
The circus has so many components, so the meaning of this dream is dependent on your focus. If you focus on the animals, you may find clues regarding your instinctive urges. See the following example:
It was quiet for a long time, then a stifled feeling slowly emerged. I found myself struggling slightly to breathe, but it was barely noticeable. It felt like slow murder because it was such a tiny progression. I realised that the animal was from the circus (where we went last week). I remember that these animals can do whatever they are trained to do, or at least do their best. I asked it to breathe slowly, and I could feel it attempting to do so. I could sense that the beast was slowly suffocating, but I didn’t know why.
If your circus dream is about the actions, then it might be related to the things you can do, or what you are afraid of. For example, a fear of heights.
Dreams about the circus can also be an insight into other ways of living that are different from your current worldview, and might be about the other options you have in life. Seeing the people who are part of the circus may be a symbol of the alternative, or of being street smart and having worldly experience.