This research aimed at investigating the most dominant of transitivity process used in report text and how it relates with the nature of report text. It employed descriptive qualitative design and applied Systemic Functional Linguistics on Transitivity. The data were 29 clauses taken from report texts used in ninth grade's National Exam. The result of this research revealed that six types of transitivity processes found in the report texts. Yet, material (44%) and relational (31%) were found to dominate the rest of the processes. This implied that those two processes serve important roles in providing clear information and description for the readers to understand the object being described in report text.