The name is spelled 'Greenane' on older signs in the village; the modern version drops the final 'e'. Greenan is also the name of a crossing in County Monaghan.
In the past, the name was written as 'Greenane' on village signs; however, the current spelling has been simplified by dropping the last 'e'. Furthermore, Greenan is also the title of a crossing in County Monaghan.