| Illuppaiyur | |
| 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: | Ariyalur |
| Unit Pref: | Metric |
| Population Total: | 3231 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Registration Plate: | TN- |
| Blank1 Name Sec1: | Sex ratio |
| Blank1 Info Sec1: | 1138 ♂/♀ |
| Blank2 Name Sec1: | Literacy |
| Blank2 Info Sec1: | 53.42% |
Illuppaiyur is a village in Ariyalur district, Tamil Nadu, India. The village is near the river Kundaru. Illupai trees are found in abundance in this area; the village gets its name from this.
Mostly two communities reside here, Nadar and Chettiar. Illuppaiyur has more than five temples.
As per census 2001, Illuppaiyur had a total population of 3231 with 1511 males and 1720 females.[1]