Killynan (Cooke)Killynan (Cooke) () is a townland in County Westmeath, Ireland. It is located about 8.86 km east–north–east of Mullingar.
Killynan (Cooke) is one of 34 townlands of the civil parish of Rathconnell in the barony of Moyashel and Magheradernon in the Province of Leinster. The townland covers 1094.63 acre.
The neighbouring townlands are: Balreagh to the north, Killynan (Pratt) to the east, Aghadaugh to the south–east, Clonickilvant to the south, Cooksborough and Cloghanumera to the south–west, Mountrobert and Loughagar More to the west and Clonkill to the north–west. The N52 road passes through the townland roughly in an east–west direction.
In the 1911 census of Ireland there were 13 houses and 44 inhabitants in the townland.