Teacher dispositions reflect multiple internal factors that contribute to a teacher’s decisions/behaviors in any given situation. There have been many studies focused on which dispositional factors lead to teachers’ use of information and communications technology (ICT). Teachers’ integration of ICT has been assessed in a variety of different ways – as a teacher’s intention to use ICT, as the frequency of ICT use in the classroom, and/or as student-centered teaching practices with ICT. If a teacher’s dispositions (i.e., attitudes, perceptions, values) are reflected through his or her behaviors, then we need to ask an important question about ICT practices: What specific dispositions do teachers need to use ICT in their classrooms? This chapter reviewed empirical studies that examined four primary dispositions associated with teachers’ uses of ICT: self-efficacy, attitudes, pedagogical beliefs, and openness to change. This knowledge provides a robust starting point for answering more challenging and complex questions in the near future, such as: Why does a teacher hold certain dispositions, and how can we capitalize on that information to better support teachers in their actual use of ICT?.