Tanglewood Music and Arts Festival was an annual two-day music, comedy and arts event held within the grounds of Narrow Water Castle, County Down, Northern Ireland. The festival, founded in 2011, has attracted significant attention both within the local area and around Northern Ireland with buses coming from as far as Belfast to the event. For the 2011 and 2012 festivals Tanglewood was held on one day; however for 2013 and 2014 it expanded into a two-day camping festival.