Censored Linear Regression Models under Heavy‑tailed Distributions R package CensRegSMSN version 0.0.1 Functions for fitting univariate linear regression models under Scale Mixtures of Skew-Normal (SMSN) distributions, considering left, right or interval censoring and missing responses. Estimation is performed via an EM-type algorithm. Includes selection criteria, sample generation and envelope. For details, see Gil, Y.A., Garay, A.M., and Lachos, V.H. (2025) <doi:10.1007/s10260-025-00797-x>. Software Depends: R (>= 3.5.0) Imports: mvtnorm, mnormt, cubature, ggplot2 Yessenia Alvarez Gil <yessenia.alvarez@ufpe.br> Comprehensive R Archive Network (CRAN) Yessenia Alvarez Gil [aut, cre], Aldo M. Garay [aut], Victor H. Lachos [aut] GPL-3 2025-11-19 application/tgz https://CRAN.R-project.org/package=CensRegSMSN doi:10.32614/CRAN.package.CensRegSMSN