Abstract <p>The most seismically hazardous marine Arctic region of the Russian Federation is the Laptev Sea, located at the junction of the mid-ocean Gakkel Ridge and the continental margin of Northern Eurasia. The development of Northern Sea Route infrastructure and shelf resources necessitate assessment of the seismic hazard parameters of the Laptev Sea region, which in turn requires knowledge of the attenuation parameters of seismic waves in the regional crust. In this article, the quality factor <i>Q</i> of the crust was determined by the earthquake coda normalization method. Earthquake records were obtained at Tiksi seismic station. The dependence of the quality factor on the azimuth relative to Tiksi seismic station was found. The maximum quality factor was determined in the eastern direction, where there is practically no concentration of fault zones, in contrast to the northern, western, and southern directions, where the selected azimuths, along which the quality factor was studied, intersect the concentration of fault zones. The quality factor of the crust in these directions turned out to be almost two times lower than the quality factor values determined in the eastern direction. The value of the quality factor averaged over different directions at different frequencies is close to the quality factor parameters of other areas with active rifting, which characterizes the studied area as tectonically and seismically active. The same applies to the degree of dependence on frequency. The closest quality factor values were determined for the area of the Northern Tanzanian rifts. These quality factor estimates can be used to develop models of seismic wave attenuation in the lithosphere for earthquakes of different magnitudes and to calculate the seismic hazard of the studied area.</p>