Dreaming of a factory could indicate a desire to get things done – especially in an efficient way, as in a factory assembly line. If the factory is polluting the environment, it could indicate that you feel something is “polluting” your life. There may be a person, situation, event, etc… that is not in your best interest and is causing you harm. Alternatively, if you work in a factory or are otherwise engaged with a factory in your waking life, seeing a factory in your dreams could represent your feelings about factories and/or factory life. Examine the condition of the factory, what was being produced, and any emotions you had in the dream.