Listooder is a hamlet and townland situated outside Crossgar towards Saintfield and Ballynahinch in County Down, Northern Ireland. Listooder derives its name from the Irish word 'Lios an tSúdaire' meaning "ring-fort".
It holds some new houses with a small working farm, missionary hall, Orange Lodge and non-subscribing Presbyterian church. There used to be a post office, pub and a shop here but closed several decades ago.
There are nine houses in Listooder and 31 people living here according to the 2011 census with many more in the surrounding area.