Water scarcity, climate change and frequent and severe drought periods pose a major threat to agriculture. Therefore, it is critical to identify and select crop species and genotypes with enhanced recovery and persistence in drought periods, which could maintain good soil quality as well. Presence of plant roots in the soil can substantially affect the rhizosphere properties such as soil structural stability due to mucliage exudation and decomposition of death roots. Tall fescue with extensive root system and high resistance and adaption to drought stress is usually considered as a drought-resistant plant. In this study, the interaction effect of 17 genotypes of tall fescue [including 5, 7 and 5 early- (E), mid- (M) and late-season (L) flowering genotypes, respectively] and three environments (i.e., no, moderate and severe drought stress treatments) was studied on structural stability and quality indicators of the rhizosphere soil in a complete randomized block design. After three years of plant cultivation and application of the treatments, soil quality indicators including water repellency, organic carbon content, percentage of water-stable aggregates, dispersible clay, hot water soluble carbohydrates, and stability indices of high energy moisture characteristic (HEMC) were measured in the rhizosphere and bulk soil without plant root (i.e., control). The rhizosphere soil quality was generally improved due to root exudates and decomposition of death roots when compared with bulk soil. Soil water repellency and organic carbon content in the rhizosphere varied highly among the genotypes and were greater than in the bulk soil. In addition, percentage of water-stable aggregates was different in the rhizosphere of different genotypes and was significantly greater in the moderate and severe stress environments compared to the bulk soil. Presence of roots of different genotypes affected the dispersible clay content of rhizosphere; it was greater in the rhizosphere of some genotypes in the non-stress environment when compared with the bulk soil. The genotypes affected the hot water soluble carbohydrates of rhizosphere in different ways, i.e., it was greater in the rhizosphere compared to the control in the non-stress and moderate stress environments. Results of interaction between environment and genotype indicated that with increasing drought stress, genotypes performed differently and the water repellency, ethanol sorptivity and soil-water contact angle were in the order severe stregt;moderate stregt;non-stregt;control. Grouping the genotypes using the principal components analysis (PCA) separately for the stress treatments indicated that some genotypes in the moderate stress had high structural stability (PC1) and water repellency (PC2) of rhizosphere soil. Overall, moderate stress environment was favorable for the substantial effects of genotypes on the soil structural stability. The early-season flowering genotype of 1E was present in all the stress treatments as a typical genotype in terms of good structural stability and water repellency of rhizosphere soil. Besides, genotype 19M was superior in terms of water repellency and structural stability in both non-stress and moderate stress environments. Overall, genotypes 1E, 16E, 19M and 3L might be recommended for cultivation in the poor soils of arid and semi-arid regions due to their significant effects on soil quality. Keywords: Tall fescue, Early-, mid- and late-season flowering genotypes, Drought stress, Soil structural stability, Dispersible clay, High energy moisture characteristic curve