| Rathaniska | |
| Settlement Type: | Townland |
| Pushpin Map: | Ireland |
| Pushpin Map Caption: | Location of Rathaniska within County Westmeath in the Republic of Ireland |
| Coordinates: | 53.6075°N -7.4442°W |
| Subdivision Type: | Country |
| Subdivision Name: | Ireland |
| Subdivision Type1: | Province |
| Subdivision Name1: | Leinster |
| Subdivision Type2: | County |
| Subdivision Name2: | County Westmeath |
| Blank Name: | Irish grid reference |
| Blank Info: | N368621 |
Rathaniska, also known as Baile Marlainn or Marlinstown, is a townland in County Westmeath, Ireland. It is located about 11km (07miles) north–west of Mullingar.
Rathaniska is one of 15 townlands of the civil parish of Leny in the barony of Corkaree in the Province of Leinster. The townland covers 122acres, of which 6acres are within the civil parish of Lackan. The neighbouring townlands are: Leny to the north, Rathbennett to the east, Farrow to the south and Ballyvade to the west.[1] [2]
In the 1911 census of Ireland there were 3 houses[3] and 8 inhabitants[4] in the townland.