Peru is multicultural, multiethnic, and multilingual, with diverse cultural expressions. This study investigated the relationship between cultural identity and the Quechua language among primary intercultural education teachers in southern Peru. A correlational descriptive research design was employed, involving 60 teachers from Andahuaylas (Apurímac), Ayacucho, and Cusco. Results showed that 50% of the teachers fell into the "Achievement" category for self-recognition of cultural identity, while 36.7% were classified as "Process." Regarding commitment to cultural identity, 50% were in the "Process" category, and 38.3% were in the "Achievement" category. Regarding the service model dimension, 68.3% were classified as "Achievement," and 26.7% as "Process." This study concluded a highly significant correlation between cultural identity and the use of the Quechua language among primary intercultural education teachers in southern Peru.