The analysis of the fully resolved Nitrogen hyperfine structure of N_2_D^+^ (1-0) observed toward L183, together with laboratory measurements of the same molecular transition, allowed an accurate determination of the hyperfine constants of both outer and inner Nitrogen. In addition, accurate rotational and centrifugal distortion constants were derived from submillimeter-wave laboratory measurements. The Tables list calculated hyperfine frequencies of J+1<--J transitions, with J in the range 1-11, which occur in the millimeter- and submillimeter-wave region.