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JAZ (Jasmonate ZIM-domain) proteins play pervasive roles in plant development and defense reaction. However, limited information is known about the JAZ family in <i>Camellia sinensis</i>. In this study, 12 non-redundant <i>JAZ</i> genes were identified from the tea plant genome database. Phylogenetic analysis showed that the 12 JAZ proteins belong to three groups. The <i>cis</i>-elements in promoters of <i>CsJAZ</i> genes and CsJAZ proteins interaction networks were also analyzed. Quantitative RT–PCR analysis showed that 7 <i>CsJAZ</i> genes were preferentially expressed in roots. Furthermore, the <i>CsJAZ</i> expressions were differentially induced by cold, heat, polyethylene glycol (PEG), methyl jasmonate (MeJA), and gibberellin (GA) stimuli. The Pearson correlations analysis based on expression levels showed that the <i>CsJAZ</i> gene pairs were differentially expressed under different stresses, indicating that <i>CsJAZs</i> might exhibit synergistic effects in response to various stresses. Subcellular localization assay demonstrated that CsJAZ3, CsJAZ10, and CsJAZ11 fused proteins were localized in the cell nucleus. Additionally, the overexpression of <i>CsJAZ3</i>, <i>CsJAZ10,</i> and <i>CsJAZ11</i> in <i>E. coli</i> enhanced the growth of recombinant cells under abiotic stresses. In summary, this study will facilitate the understanding of the <i>CsJAZ</i> family in <i>Camellia sinensis</i> and provide new insights into the molecular mechanism of tea plant response to abiotic stresses and hormonal stimuli.