In recent decades, technology has changed the methods of teaching and assessment in educational settings all over the world. One notable innovation that has gained prominence in English language teaching (ELT) is the utilization of e-portfolios to evaluate and enhance students' writing and, potentially, speaking skills. While students have shown positive attitudes toward integrating e-portfolios in speaking classes, teachers' attitudes toward this pedagogical method remain undisclosed. Therefore, this study investigates teachers' attitudes toward e-portfolios in speaking classes based on the data collected from semi-structured and focused group interviews. The data was obtained from the Iran Language Institute (ILI), a leading institution for teaching English in Tehran. A grounded theory approach was used to analyze and evaluate 10 semi-structured interviews and focus groups. While some challenges are to overcome, teachers appear positive about implementing e-portfolios in speaking classes. As a result of teachers' attitudes towards e-portfolios, four categories emerged: ownership and responsibility, reflection (peer and self), teacher self-improvement, and drawbacks.