The word "kaimonan" means gathering. Kaimonan Festival is a gathering of the four dominant tribes in Tagum City, Mansaka, Mandaya, Kalagan and Dibabaon to celebrate a bountiful harvest and to give thanks to their GOD known as "Magbabaya". This celebration showcasing different rituals, tribals songs and dances such as Courtship "Pagkinarimay", Wedding "Pagbaroy", Birth "Pagka-otaw", Abduction " Pagkamang sang Utaw", Rescue "Pagluwas, Pangapog "Offering" and War dance "Pagpangayaw".

Kaimonan Festival has started five years ago since 2003. It is celebrated every 10th day of the month of October. This is in accordance with the Republic Act 8371 known as IPRA (Indigenous Peoples Rights Act) Law that upholds, promote, develop and preserve the culture and tradition of the Indigenous People as reflected in chapter 6 section 29 of the said law.