The current study aimed to identify the development of the self-concept of kindergarten children through free play from the point of view of teachers. The study sample consisted of (85) kindergarten teachers in the city of Najran in the Kingdom of Saudi Arabia, who were selected from government kindergarten institutions in a random manner. The study was applied during the first semester of the academic year (2023/2024), the study used the descriptive analytical approach, and the researchers designed a questionnaire addressed to kindergarten teachers to find out the development of the kindergarten child’s self-concept through free play from the point of view of the teachers. The questionnaire contained 17 items distributed on three main areas. The first area included “the reality of developing the self-concept of the kindergarten child through free play in kindergarten institutions, “the second included“the role of the kindergarten teacher in developing the self-concept of the kindergarten child through free play in kindergarten institutions,” and the third included “proposals for activating the development of the self-concept of the kindergarten child.” Through free play in kindergarten institutions from the teachers’ point of view. The results were processed and the study reached the following results: Free play has a fundamental role in developing the self-concept of the kindergarten child from the teachers’ point of view to a large extent.