The SHAKER-type potassium (K+) channel family plays a vital role in plant growth, ion homeostasis, and adaptation to environmental stresses. Despite its physiological importance, the Shaker gene family in garlic (Allium sativum) has not been systematically explored. In this study, nine Shaker genes were identified in the garlic genome and classified into three major subfamilies, including AKT, KAT, and SKOR. Bioinformatic analyses revealed that these proteins share conserved motifs and a typical six-transmembrane domain structure consistent with other plant SHAKER channels. Physicochemical property assessments indicated that most proteins are stable, hydrophilic, and possess features suitable for membrane localization. Comparative analysis with SHAKER proteins from kiwifruit, sugar beet, and cabbage highlighted both conserved features and species-specific differences. These results establish a molecular framework for further studies on SHAKER function in garlic and support future efforts to enhance potassium use efficiency and stress tolerance through genetic and biotechnological approaches.