| Letničie | |
| Settlement Type: | Village |
| Subdivision Type: | Country |
| Subdivision Name: | Slovakia |
| Subdivision Type2: | Region |
| Subdivision Name2: | Trnava |
| Subdivision Type3: | District |
| Subdivision Name3: | Skalica |
| Pushpin Map: | Slovakia Trnava Region#Slovakia |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Letničie in the Trnava Region |
| Coordinates: | 48.7125°N 17.1781°W |
| Leader Title: | Mayor |
| Leader Name: | Marián Dvorský |
| Established Title: | First mentioned |
| Established Date: | 1532 |
| Area Total Km2: | 6.69[1] |
| Area Total Sq Mi: | 2.58 |
| Elevation M: | 213[2] |
| Elevation Ft: | 699 |
| Population Total: | 508[3] |
| Population Density Km2: | 75.26[4] |
| Population Density Sq Mi: | 29.06 |
| Postal Code Type: | Postal code |
| Postal Code: | 908 44 |
| Area Code: | +421 34 |
| Blank Name: | Car plate |
| Blank Info: | SI |
| Website: | www.letnicie.sk |
Letničie (Hungarian: Letenőc) is a village and municipality in Skalica District in the Trnava Region of western Slovakia.
Mayor Marián Dvorský was elected in 2010. Deputy mayor is Mgr Katarína Smolinská.
In historical records the village was first mentioned in 1532.
There is the Roman Catholic Church of St. John the Baptist since 1822, and a Pieta built to honor a soldier killed in the First World War. Near the church there is a memorial of heroes killed in the Slovak National Uprising. At the municipal office building is a memorial plaque of Anton Vaculka who died in the village of Haj.
The municipality lies at an altitude of 210 metres and covers an area of 6.701 km². It has a population of about 527 people.