Janusz Siadlak (born June 12, 1961) is a Polish conductor.
Siadlak was a founder, and from the beginning, a conductor of "Collegium Cantorum". He is a graduate of the Music Education Faculty of the Higher Teacher Education School in Czestochowa and of the Postgraduate Choirmaster Education of the Academy of Music in Bydgoszcz, which he finished with distinction.
Moreover he took part in many conductor seminars and scientific symposia throughout Poland. From 1994–1998 he took part in courses, seminars, symposia which were led by famous conductors and representatives of the world chorale groups such as Prof. Heinrich Poos from Frankfurt on Main, Dr Hans Jaskulsky from Conservatoire in Bochum, Dr Hayashi Hikaru from the University in Tokyo, Uwe Gronostay from the Philharmonic Hall in Berlin, Prof. Tatsuya Muratani from Tokyo.
In 1995 Janusz Siadlak was distinguished with the award of "Best Conductor" within a framework of Choir Band Review in Czestochowa. In 1997 he received the award of "Best Conductor" at the Religious Music Festival in Rumia. In 1998 he was distinguished with the Award of the Voivode for the whole of his artistic work and in August 2000 he was distinguished with the Award of the President of Czestochowa City for his great achievements the musical field.
He was chosen for "the Creator of the Year 2000" by the plebiscite of the Gazeta Wyborcza newspaper and the Chapter of the Zycie Czestochowy newspaper chose him for "Man of the Year 2000". From January 2003 to August 2009 he was a Choir Master in the Song and Dance Ensemble Slask