Man
The meaning of seeing a man in your dreams have several meanings depending on who you are and who the man is.
A man in a woman's dream that she knows represents the masculine part of her subconscious and or sometimes her feelings towards that man she actually knows such as work ethic, eroticism, friendship, anger.
A man in a woman's dream that she does not know is her view of men or similar men in her life.
A man in a man's dream represents the masculine part of his subconscious and or sometimes his feelings towards that man he actually knows and how it relates to his own characteristics such as work ethic, lifestyle, and common belief systems. If it is someone he admires, this is who he strives to be more like.
A man in a man's dream that he does not know is his view of men or similar men in his life and his opinion of how a man should be.