Castlepalooza was an annual Irish independent music & Arts Festival, held at Charleville Castle in Tullamore, County Offaly. The festival began in 2005 and was held annually until 2019. The was described by Hot Press as a "bite-sized Electric Picnic, held in the grounds of a 17th-century castle, with the added bonus of indoor toilets and showers". The festival was described by The Sunday Business Post as "The best little music festival in Ireland".