Is there any Cleopatra living relatives living today?

Maybe, maybe not. It would take an intense genealogical search to find out. We know that her daughter had children, but don't know about her son's offspring. Also may of the ancient birth records have been lost and to complicate matters more, if a descendant were a girl/woman, she quite possibly would not be mentioned at all. So, maybe, maybe not, is the best answer to date.
Maybe, maybe not. It would take an intense genealogical search to find out. We know that her daughter had children, but don't know about her son's offspring. Also may of the ancient birth records have been lost and to complicate matters more, if a descendant were a girl/woman, she quite possibly would not be mentioned at all. So, maybe, maybe not, is the best answer to date.