World Martial Arts Festival (August 28 – September 1, 2014) – Martial arts performances, martial arts contest, hands-on experience programs, martial arts museum, event programs, cultural performances, health experience, etc.
Andong Maskdance Festival (Sept. 26th-Oct. 5th, 2014) – Celebrating traditional Korean mask dance performance, as well as other international folk art.
Busan International Film Festival (October 2 – 11, 2014) – One of the biggest film festivals in Asia.
Kimchi Festival (October 8 – 12, 2014) – See smell and taste dozens of varieties of the spicy stuff, and there’s even a gimchi-making contest for foreigners keen to show off.
Ulsan Onggi Festival (Oct. 24th-26th, 2014) – Celebrating the art of traditional pottery making.
Jindo Miracle Sea Festival (Early April 2015) – Mysterious part of the sea, allowing people to walk from the mainland to a nearby island.
Chuncheon International Mime Festival (End of May 2015) – A diverse range of performances, including mime, music, dance, installation art, and short films.
Pohang International Fireworks Festival (Early August 2015) – Lots and lots of pyrotechnics!
If you have any other recommendations for festivals in Korea, please leave them in the comments section!