This study's extensive quantitative research design to investigate the professional identities of in-service EFL teachers in Kazakhstan and Turkistan makes it stand out. A comprehensive survey, unparalleled in scope and exhaustiveness, was distributed to 470 English instructors in 45 state schools, offering an extensive synopsis of how these educators see their professional identities. The survey findings provide insights into several professional identity factors, including the propensity to teach, act as role models, and establish productive learning settings. The results show that participants' professional identities were generally average, with major exceptions for knowledge-sharing and role modeling. Simultaneously, less emphasis was placed on recognizing students' original language culture and establishing a favorable classroom atmosphere. The study also looks at how different professional identities are within qualification categories, and it finds statistically significant variances that highlight how teachers' self-perception and professional growth are influenced by their educational background. These findings have implications for teacher education and professional development initiatives and a deeper knowledge of the elements influencing EFL instructors' professional identities in Kazakhstan.