Drought stress leads to a negative effect on Guizotia abyssinica germination characteristics and can be reduced with bio-priming. This research was conducted to investigate the effect of different concentrations of three brown Algae’s on Niger seed germination characteristics at different drought stress levels; as a factorial scheme in a completely randomized design with three replications.The first factor includes control and seaweed extract, Ecklonia maxima (Basfoliar), Ascophyllum nodosum (Acadian) and Sargassum glaucescens (Alga600) each in 2 and 3 percent concentrations and the second factor included different levels of drought stress 0, -0.4 and -0.8 MPa. The effect of fertilizer on all traits except daily germination rate, the effect of drought stress on all traits except germination index, and the interaction effect on all traits were significant. Means comparison of the interaction effect showed that Alga600 2% at zero drought stress had the highest germination percentage (90%), germination rate (7.8 1/days) and mean daily germination (12.33 seed /day). Basfoliar 3% and -0.8 MPa drought stress produced the highest mean germination time (3.9 days), control algae treatment and -0.8 MPa drought stress had the highest daily germination rate (0.16), Acadian 3% and -0.8 MPa drought stress had the highest germination index (3.24 percent) and relative germination (211.12 percent) and Basfoliar algae 2% and zero drought stress level produced the highest coefficient of velocity of germination (35.81 percent). In general, it can be concluded that drought stress reduces and the algae application improves seeds germination and growth characteristics of Niger seed, especially under drought stress conditions. Therefore, the use of brown seaweed can be suggested as an effective solution to reduce the destructive effects of drought stress.