The basketball tournaments of NCAA Season 85 refers to the basketball events of the Philippine National Collegiate Athletic Association (NCAA)'s 2009–10 season. This is the first season without the PCU Dolphins who have taken an indefinite leave of absence after several of their juniors' division players were found to have used falsified documents to enter the school. Also, three guest teams will take part in the basketball events with all three eligible to win championships.

Renato "Ato" Guilas Agustin is a Filipino former professional basketball player, politician, and current assistant coach for the San Miguel Beermen. He played college basketball for the Lyceum of the Philippines before moving on to play professional basketball in the Philippine Basketball Association (PBA).