As with everything that is performed publicly, it refers to a portrayal of the Self, as in Theater and Concert.
If the dreamer is the speaker, it indicates a desire to make a statement.
The task is to serve the interests of all the listeners and to find and make clear to them your point of view. There is a desire to solve present situations intellectually. See also Puzzle. As far as the speaker is concerned, the issue is to combine emotion and logic, intellect and consciousness. This dream symbol almost always includes aspects of self-under- standing. It might also encourage you to become a better listener, as in Ear and Mouth. And, last but not least, this dream symbol also represents your inner voice.... Little Giant Encyclopedia
Vision: If you are giving a lecture: you are too vain and self- satisfied—expect no sympathy. Losing your concentration during a speech: learn to speak freely—stage fright is not necessary.... Dreamers Dictionary
To dream that you are giving a lecture indicates that people around you find you devoid of fresh ideas - you are boring and uninteresting. Perhaps you need to work on enhancing your interpersonal skills. Alternatively, this dream may be a spillover of your rational, objective self.... Dream Symbols and Analysis
Psychological / emotional perspective: A lecture is a way of passing on information, often specialized or newly accrued, so such an image suggests there is something we need to know.... Dream Meanings of Versatile
To dream that you are giving a lecture, suggests that you are becoming somewhat of a bore. You may need to improve your communications skills. Alternatively, your dream may serve as a continuation of your intellectual thinking carried over from your waking hours.
To dream that you are attending a lecture means something will not turn out as great as you wished.
If you dream of being lectured by your parents or an authority figure, this signifies guilt or shame about your actions.... My Dream Interpretation