Fernando Sales was the head coach at UDFC from May 2021 to August 2021. That was between two seasons, so he was not in charge of any games. According to media, his departure was due to the club`s financial situation.
Job: Head coach
Coach
Uthai Boonmoh
He was head coach at UDFC from January to April in 2018.
Hannarong Chunhakunakorn
He was head coach from March to May 2015.
Worradet Phuprapri
He was head coach from December 2014 to March 2015.
Park No-Bong
He was head coach at UDFC from July to September in 2012.
Supon Yapapha
He was head coach at UDFC from January to July in 2012.
Wittaya Kantanapakdee
He was head coach at UDFC from January to April in 2010.
Watcharapong Klahan
He was head coach at UDFC from July to October 2018.
His name in Thai: วัชรพงศ์ กล้าหาญ
His profile at Wikipedia: https://en.wikipedia.org/wiki/Watcharapong_Klahan