This chapter discusses the role of the language teacher and their beliefs in realizing the potential that rapidly evolving technology-mediated tools offer second/additional language learning (L2) in an increasingly digitalized world. The promise and pressures of technology integration are first discussed highlighting the need for new approaches to pedagogy in technology-mediated L2 teaching. Factors contributing to teacher resistance are then reviewed including the unique qualities of educational resistance to technology. Research identifying the nature of teacher beliefs from a range of studies is examined along with a conceptual framework illustrating the interconnected factors shaping L2 teacher beliefs and behaviour towards educational technology. Recommendations for effective approaches to technology-directed language teacher education and areas of needed research conclude the chapter.