A dream featuring a kidnapping implies that you are facing concern or issues that you have not dealt with fully yet.
If someone is kidnapped then it may suggest that in some part of your waking life you are not expressing or are suppressing the characteristics of the person being kidnapped in the dream, or alternatively, you are wishing to embrace the characteristics or qualities of the person being kidnapped.
To kidnap someone in a dream suggests you are being demanding, tenacious, forceful, or you are influencing, taking advantage or forcing your ideas or views onto others.
If you are kidnapped in the dream then it implies that you feel a lack of control in your life, feel insecure or vulnerable, victimized, facing restriction or feeling trapped, or you are having doubts or concerns about something.