| Athipattu Pudunagar | |
| Native Name: | அத்திப்பட்டு புது நகர் |
| Native Name Lang: | ta |
| Other Name: | Athipattu Pudhu Nagar |
| Settlement Type: | town |
| Pushpin Map: | India Chennai#Tamil Nadu#India |
| Pushpin Label Position: | right |
| Coordinates: | 13.2497°N 80.2994°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Tamil Nadu |
| Subdivision Type2: | District |
| Subdivision Name2: | Tiruvallur |
| Subdivision Type3: | Metro |
| Unit Pref: | Metric |
| Elevation M: | 7 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Tamil |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 600120 |
| Area Code Type: | Telephone code |
| Area Code: | 044 |
| Registration Plate: | TN 18 |
| Blank1 Name Sec1: | Planning agency |
| Blank1 Info Sec1: | CMDA |
| Blank2 Name Sec1: | City |
| Blank2 Info Sec1: | Chennai |
| Blank3 Name Sec1: | Lok Sabha constituency |
| Blank3 Info Sec1: | Thiruvallur |
| Blank4 Name Sec1: | Vidhan Sabha constituency |
| Blank4 Info Sec1: | Ponneri |
Athipattu Pudunagar [Acronym: ANT] (Tamil: அத்திப்பட்டு புது நகர் / அத்திப்பட்டு நியூ டவுன்) is a census town in Thiruvallur district in the state of Tamil Nadu, India. It is to the north of Chennai city. The town is served by Athipattu Pudhunagar railway station of the Chennai Suburban Railway network. Special Industrial area of Tamil Nadu.Surrounded by Kamarajar Port, North Chennai Thermal Power Station, NTECL, India Cement, Zuari Cement, L&T Shipbuild, IOCL, HPCL, BPCL & more Container yard terminals.