Prepared for submission to JHEP IPPP/19/23 ZU-TH 13/19 CERN-TH-2019-034 Isolated photon and photon+jet production at NNLO QCD accuracy Xuan Chen,a Thomas Geann,a Nigel Glover,b Marius H ofer,a Alexander Hussc aPhysik-Institut, Universit at Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland bInstitute for Particle Physics Phenomenology, Durham University, Durham, DH1 3LE, UK