| Allaippiddi | |
| Native Name: | அல்லைப்பிட்டி අලපිටිය |
| Settlement Type: | Village |
| Pushpin Map: | Sri Lanka Northern Province |
| Subdivision Type: | Country |
| Subdivision Name: | Sri Lanka |
| Subdivision Type2: | Province |
| Subdivision Name2: | Northern |
| Subdivision Type3: | District |
| Subdivision Type4: | DS Division |
| Subdivision Name4: | Islands South |
| Coordinates: | 9.6167°N 79.9667°W |
Allaippiddi or Allaipiddy (Tamil: அல்லைப்பிட்டி, Sinhala; Sinhalese: අලපිටිය Alapitiya) is a village on Velanai Island off the coast of the Jaffna peninsula within Sri Lanka's Northern Province.
Allaipiddy is strategically located on the causeway from Jaffna towards islets of Velanai and Kayts through Pannai bridge. After Mandaitivu, past the abandoned aluminium factory, lies a large Sri Lanka Navy garrison, 500m (1,600feet) from Allaipiddy.[1]
Most residents of the village are Sri Lankan Tamils and the majority are Roman Catholics. In May 2006, the population was estimated to be around 800.[2] At least 150 residents fled the village after the Allaipiddy massacre of May 13, 2006.[3]