| Arumalai Kottai | |
| Settlement Type: | village |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Tamil Nadu, India |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Thanjavur |
| Leader Title: | Panchayat President |
| Unit Pref: | Metric |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
Arumalai kottai is a large village in Thanjuvur, Tamil Nadu, India. The Original Name of the Village is "Arulmozhi varman Kottai". Arulmozhi varman is the name of King Raja cholan. This village belongs to one of the Vazhanadu in his ruling called "Kundavai Vazhanadu"; Kundavai is the name of his Sister "Kundavai Piratti". Over period of time the village name become Arumalai kottai and the nadu name become "Kulanthai VazhaNadu".Mostly, "kallar" people living in this village.