NNW

NNW may refer to:

National Nurses Week, the week of May 6 through May 12 (Florence Nightingale's birthday) proclaimed by Richard Nixon in 1974 as a period for Americans to recognize nurses' service and contributions
Neural network, an interconnected group of neurons or artificial neurons
North-northwest or Nor-norwest, one of the principal directions on a compass or compass rose, lying at the midpoint between the cardinal direction north and the ordinal direction northwest (see also: boxing the compass)

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