| Official Name: | Oddamavadi |
| Native Name: | ஓட்டமாவடி ඔට්ටමාවඩි |
| Pushpin Map: | Sri Lanka |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: | Sri Lanka |
| Subdivision Name1: | Eastern Province |
| Subdivision Type2: | District |
| Subdivision Name2: | Batticaloa District |
| Government Type: | Koralai Pattu West Divisional Secretariat |
| Coordinates: | 7.9214°N 81.515°W |
| Unit Pref: | Metric |
| Area Land Km2: | 176 |
| Population As Of: | 2007 |
| Population Total: | 20,985 |
| Population Density Km2: | 341 |
| Timezone: | Sri Lanka Standard Time |
| Utc Offset: | +5:30 |
Oddamavadi is one of the highest fish producing divisions of Batticaloa. The important landmarks of the town are the 250m Oddamavadi steel bridge, Ameer Alli stadium, and the malty day boat landing site. Oddamavadi is the place where the Valaichchenai lagoon meets the sea. The Valaichchenai fisheries harbour which belongs to koralai pattu is situated in Valeichchenai division witness the big boats in action as well as boat mending and net mending activities.
There are several schools in Oddamavadi including: