The geometric habits of mind are a process that enables the adoption of ways of thinking about the problems encountered and that works for filling the gap between the results and the thoughts behind these results. It is also important that which cerebral hemisphere activates the geometric habits of mind, so geometric habits of mind and hemispheric dominance of mathematics teachers were investigated in that regard. It was observed that most of the mathematics teachers dominantly used their left brain and some of them who used their right brain dominantly or who used their right and left brain equally. It was concluded that the geometric habits of mind of both the teachers who dominated the left brain and the right brain and used both sides equally were at the desired level and mathematics teachers who have different hemispheric dominance were sufficient in terms of characteristics of geometric habits of mind.