To dream that you are hiding, suggests that you are keeping some secret or withholding some information. You may not be facing up to a situation or not want to deal with an issue. However, you may be getting ready to reveal and confess before somebody finds out. To dream that you are somebody else is hiding, indicates a need for security and protection. In particular, to dream that you are hiding from some authority figure (police, parents, teacher...), implies feelings of guilt.
In daily life we hide from things that we don't want to deal with or we hide from danger. As children we played the game of "hide and go seek," while as adults we enjoy "chase and discovery." The emotional tone of your dream will reveal its meaning. If you are hiding out of danger, then you should consider those things in your life that propose a threat to you. They could be internal forces or environmental conditions. Generally, we attempt to hide our own negativity and mistakes. This dream may call for an honest reflection on personal characteristics and an evaluation of how much fear influences our lives and decision-making.