Neutrosophic Analysis of Incomplete Block Designs R package NeutroIBDAnalysis version 0.1.1 Provides methods for neutrosophic analysis of variance (NANOVA) and neutrosophic analysis of covariance (NANCOVA) for interval-valued data arising from incomplete block design experiments. The package supports balanced incomplete block designs (BIBDs), partially balanced incomplete block designs (PBIBDs), and lattice designs. Functions are included for treatment comparisons, least significant difference (LSD) tests, and interval-based statistical inference under neutrosophic environments. Software Depends: R (>= 4.0.0) Imports: MASS, stats Vinaykumar L.N. <vinaymandya123@gmail.com> Comprehensive R Archive Network (CRAN) Neethu R.S. [aut, ctb], Cini Varghese [aut, ctb], Mohd Harun [aut, ctb], Anindita Datta [aut, ctb], Vinaykumar L.N. [aut, cre] GPL (>= 2) 2026-06-05 application/tgz https://CRAN.R-project.org/package=NeutroIBDAnalysis doi:10.32614/CRAN.package.NeutroIBDAnalysis