Reiner Dennewitz (born 21 February 1937) is a German composer.
After the Abitur he passed at the Schnepfenthal Salzmann School, he studied composition with Johann Cilenšek [de] and piano with Siegfried Rapp at the Hochschule für Musik Franz Liszt, Weimar.
[1] Afterwards he was a master student for composition with Fritz Geißler at the Academy of Arts, Berlin.
[2][1] He then worked as a music teacher and freelance composer.
[3] His compositions were performed by the Thomanerchor and Canzonetta Chamber Choir Leipzig, among others.