The III Colombian Statistics Congress and the XV Latin American Congress of Statistical Societies (XV CLATSE) will hold jointly between 9 and 13 October 2023 in Santiago de Cali, Colombia. The Congress topics are Bayesian Statistics, Mixed Models, Data Science, Teaching Statistics, Industrial Statistics, Sampling and Official Statistics, Computational Statistics, Experimental Design, Spatial Statistics, Time Series, Women in Data Science, Environmental Statistics, Non-Parametric Regression, Multivariate Methods (applied to Financial Risk).