| Kastna | |
| Settlement Type: | village |
| Pushpin Map: | Estonia |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Estonia |
| Subdivision Type: | Country |
| Subdivision Name: | Estonia |
| Subdivision Type1: | County |
| Subdivision Name1: | Pärnu County |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Pärnu urban municipality |
| Established Title: | First mentioned |
| Established Date: | 1228 |
| Population Total: | 51 |
| Population As Of: | 01.01.2011 |
| Population Density Km2: | auto |
Kastna is a village in Pärnu urban municipality, Pärnu County, in southwestern Estonia, on the coast of Gulf of Riga.[1] It has a population of 51 (as of 1 January 2011).[2]
Kastna Manor was first mentioned in 1228.[3]
Kastna St. Arsenius Orthodox church was built in 1904.[4]