Collariella is a genus of fungi in the family Chaetomiaceae.
Species Collariella bostrychodes (Zopf) X.Wei Wang & Samson 2016 Collariella capillicompacta M. Mehrabi-Koushki, Aghyl & M. Esfand. 2019 Collariella carteri X.Wei Wang, Houbraken & Samson 2016 Collariella causiiformis (L.M. Ames) X.Wei Wang & Samson 2016 Collariella gracilis (Udagawa) X.Wei Wang & Samson 2016 Collariella hilkhuijsenii Crous 2017 Collariella quadrangulata (Chivers) X.Wei Wang & Samson 2016 Collariella quadrum Z.F. Zhang, F. Liu & L. Cai 2017 Collariella robusta (L.M. Ames) X.Wei Wang & Samson 2016 Collariella virescens (Arx) X.Wei Wang & Samson 2016