Teacher self-disclosure is a communication technique to improve relationships between teachers and students. More often than not, a healthy learning environment is created by the relationship between the teacher and students (Frymier & Houser, 2000). This study aimed to determine whether there are any variations between male and female students' motivation regarding the teachers' self-disclosure and to investigate the relationship between teachers' self-disclosure and EFL students' motivation for class participation. In order to accomplish these goals, 28 teachers and 108 intermediate English learners from three institutions--Andishe Sabz Ehsan Institution, Arad Institution, and Maqreb Zamin Institution--who were both male and female students were chosen to take part in the study. Data was then gathered using the teachers' self-disclosure questionnaire and the students' motivation questionnaire. The study's findings suggested a strong correlation between teachers' self-disclosure and EFL students' motivation to participate in class; however, there was no difference in motivation between male and female students concerning teachers' self-disclosure. The findings of this study suggest that TSD can be used as a teaching and career development tool by EFL instructors at schools, universities, and other English language institutions to enhance learning and motivate students to learn English most effectively.