A dream guide is a spirit guide dream character encountered in a dream, particular a fully lucid dream.

On the scale of lucidity, "full" lucidity requires that all characters in a dream, not just the dreamer, be aware that they are in a dream. In this case, "another dream character not only becomes lucid before the dream-ego, he also possesses a higher degree of lucidity than the dream-ego later achieves."

Anthony Shafton gives the following example of encountering a dream guide: