This study aims to describe the form and function of fatis in Riau Malay dialect of Kuantan Singingi. Research on the fatis form and function of Riau Malay dialect of Kuantan Singingi dialect is a qualitative research using descriptive method. This research was conducted in Kuantan Singingi Regency. The instrument used in this research is to find, obtain and obtain data by themselves, namely by…