W. Arthur Lewis, Saint Lucian-Barbadian economist and academic, Nobel Prize laureate (died 1991)

Sir William Arthur Lewis was a Saint Lucian economist and the James Madison Professor of Political Economy at Princeton University. Lewis was known for his contributions in the field of economic development. In 1979, he was awarded the Nobel Memorial Prize in Economic Sciences.

The Nobel Memorial Prize in Economic Sciences, officially the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, commonly referred to as the Nobel Prize in Economics, is an award in the field of economic sciences administered by the Nobel Foundation, established in 1968 by Sveriges Riksbank to celebrate its 300th anniversary and in memory of Alfred Nobel.