To dream of being kidnapped symbolizes that you feel your freedom is being threatened. You need to remain calm and focused on your goals, despite someone attempting to deter or distract you.
A dream in which someone you know is kidnapped indicates that the person possesses qualities that you are choosing not to display yourself.
Kidnapping another person in a dream denotes that you are unfairly and forcibly holding on to something in your life. This may be as simple as your observations or outlooks.