Redefined transformative learning refers to learning that implies a change in the learner's identity, which includes cognitive, emotional, and social dimensions and is something all teachers, in this case migrant teachers, experience and negotiate when meeting a new educational context. "Who am I as a teacher in a new country?" migrant teachers ask themselves. To understand oneself as a teacher, one must identify and coordinate the past and present with a future direction, which causes migrant teachers to talk about a transformed professional identity with additional skills. This Element concerns migrant teachers' transformation, how they redefine their professional identity, and how to support this in teacher education.