A person or organization awarded the Nobel Prize is called Nobel Laureate. The word 'laureate' refers to being signified by the laurel wreath. In ancient Greece, laurel wreaths were awarded to victors as a sign of honor.
Nobel Prize, any of the prizes (five in number until 1969, when a sixth was added) that are awarded annually from a fund bequeathed for that purpose by the Swedish inventor and industrialist Alfred Nobel. The Nobel Prizes are widely regarded as the most prestigious awards given for intellectual achievement in the world. - britannica.com