Not an official title; lowercase laureate. See a complete list of Nobel Prize winners from the university.
Per AP, the five established under terms of the will of Alfred Nobel are: Nobel Peace Prize, Nobel Prize in chemistry, Nobel Prize in literature, Nobel Prize in physics, Nobel Prize in physiology or medicine. (Note the capitalization styles.)
The Nobel Memorial Prize in Economic Sciences is not a Nobel Prize in the same sense. The Central Bank of Sweden established it in 1968 as a memorial to Alfred Nobel.