Searches for additional Higgs bosons with the CMS detector at the LHC are presented.
The analyses are based on proton-proton collisions at \sqrt{s} = 13 TeV recorded in 2016, corresponding to an integrated luminosity of 35.9 fb^{-1}.
The observed data are consistent with the standard model expectations.
Upper limits on the Higgs boson production cross section times branching ratio are set for each search.
These results further reduce the allowed parameter space for extensions of the standard model.