  Far Ultraviolet Spectroscopic Explorer observations are presented for
WD0621-376, a DA white dwarf star in the local interstellar medium (LISM) at a
distance of about 78 pc. The data have a signal-to-noise ratio of about 20-40
per 20 km/s resolution element and cover the wavelength range 905-1187 \AA.
LISM absorption is detected in the lines of D I, C II, C II*, C III, N I, N II,
N III, O I, Ar I, and Fe II. This sight line is partially ionized, with an
ionized nitrogen fraction of > 0.23. We determine the ratio $D/O = (3.9 \pm
^{1.3}_{1.0})\times 10^{-2}$ (2$\sigma$). Assuming a standard interstellar
oxygen abundance, we derive ${\rm D/H} \approx 1. 3 \times 10^{-5}$. Using the
value of N(H I) derived from EUVE data gives a similar D/H ratio. The D I/N I
ratio is $(3.3 \pm ^{1.0}_{0.8})\times 10^{-1}$ (2$\sigma$).
