This paper provides a comprehensive review of chemical shrinkage (CS) and autogenous shrinkage (AGS) in cementitious systems, covering measurement techniques, modeling, and prediction. CS is influenced by the water-to-binder ratio (w/b) and the degree of hydration, with low w/b ratios leading to higher CS and AGS. The composition of cement and the addition of supplementary cementitious materials (SCMs) also affect both parameters. Fly ash (FA) reduces CS and AGS, while slag has a more complex effect. The paper includes a section on recent studies on the impact of bio-fibers on CS and AGS, which have shown significant reductions in these parameters. The review covers 172 references, including 35 published after 2020, and discusses the evolution of urbanization and the role of SCMs in reducing CO₂ emissions. The mechanisms of CS and AGS are explained, and various measurement techniques for both parameters are described. The paper also explores factors affecting CS and AGS, such as cement composition, degree of hydration, water-to-binder ratio, and chemical admixtures. Finally, it presents models for predicting CS and AGS and concludes with recommendations for future research.This paper provides a comprehensive review of chemical shrinkage (CS) and autogenous shrinkage (AGS) in cementitious systems, covering measurement techniques, modeling, and prediction. CS is influenced by the water-to-binder ratio (w/b) and the degree of hydration, with low w/b ratios leading to higher CS and AGS. The composition of cement and the addition of supplementary cementitious materials (SCMs) also affect both parameters. Fly ash (FA) reduces CS and AGS, while slag has a more complex effect. The paper includes a section on recent studies on the impact of bio-fibers on CS and AGS, which have shown significant reductions in these parameters. The review covers 172 references, including 35 published after 2020, and discusses the evolution of urbanization and the role of SCMs in reducing CO₂ emissions. The mechanisms of CS and AGS are explained, and various measurement techniques for both parameters are described. The paper also explores factors affecting CS and AGS, such as cement composition, degree of hydration, water-to-binder ratio, and chemical admixtures. Finally, it presents models for predicting CS and AGS and concludes with recommendations for future research.