Bayesian Inference on Univariate Normal Mixtures R package Nmix version 2.0.5 A program for Bayesian analysis of univariate normal mixtures with an unknown number of components, following the approach of Richardson and Green (1997) <doi:10.1111/1467-9868.00095>. This makes use of reversible jump Markov chain Monte Carlo methods that are capable of jumping between the parameter sub-spaces corresponding to different numbers of components in the mixture. A sample from the full joint distribution of all unknown variables is thereby generated, and this can be used as a basis for a thorough presentation of many aspects of the posterior distribution. Software Peter Green <P.J.Green@bristol.ac.uk> Comprehensive R Archive Network (CRAN) Peter Green [aut, cre] (ORCID: <https://orcid.org/0000-0002-4367-4756>) GPL (>= 2) 2023-09-19 application/tgz https://CRAN.R-project.org/package=Nmix doi:10.32614/CRAN.package.Nmix en-GB