The genetic diversity and plant growth promoting (PGP) traits of biocontrol pseudomonads associated with finger millet rhizosphere grown in the semiarid regions of Tamil Nadu, South India were assessed. A total of 1650 rhizobacteria were isolated from 50 rhizosphere soil samples of finger millet and 622 isolates were confirmed as pseudomonads using genus specific primers. Among the total pseudomonads identified, 102 isolates showed biocontrol activity against blast pathogen Pyricularia grisea and BOX-PCR fingerprinting profiling of these isolates clustered into nine distinct genetic groups. The 102 biocontrol pseudomonads exhibited various biocontrol traits such as production of 2,4-diacetylphloroglucinol (20 isolates), Hydrogen cyanide (66 isolates), cellulase (28 isolates), protease (65 isolates) and chitinase (47 isolates). In addition, these isolates exhibited key plant growth promoting traits such as IAA production, phosphate solubilisation, biofilm formation, production of ACC deaminase and AHL signalling molecules. Phylogenetic analysis based on 16S rRNA sequence analysis showed that these isolates predominantly belonged to P. putida, P. plecoglossicida, P. mosselli, P. mendocina, and P. aeruginosa groups. This study revealed the genetic and plant growth promoting functional diversity of pseudomonas associated with finger millet rhizosphere and was largely represented by two group’s namely P. putida and P. aeruginosa (sensu stricto). Thus, these pseudomonads with potential biocontrol and PGP properties can be exploited for the development of bioinoculant products to control blast pathogen in millets, to enhance crop yield and maintain soil fertility, additionally it can be promoted as a renewable resource for sustainable agriculture.