This study reports the effect of salinity and inoculation on gro-wth, ion uptake and nitrogen fixation by guar (Cyamopsis tetragonoloba (L) Taub.) A soil of ECe level 8.3 dS/m was quite detrimental, causing about GO% decline in dry matter and grain yield of guar plants whereas a soil of ECe level 10.0 dS/m was almost toxic. In contrast, most of the studied strains of Rhizobium were salt tolerant. Nevertheless, nodulation, nitrogen fixation and total nitrogen concentration in the plant were drastically affected at high salt concentration. A noticeable decline in acetylene reduction activity occurred when salinity level increased to 8.3 dS/m.