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<i>AREB</i>/<i>ABF</i> (ABA response element binding) proteins in plants are essential for stress responses, while our understanding of <i>AREB</i>/<i>ABFs</i> from orchid species, important traditional medicinal and ornamental plants, is limited. Here, twelve <i>AREB</i>/<i>ABF</i> genes were identified within three orchids’ complete genomes and classified into three groups through phylogenetic analysis, which was further supported with a combined analysis of their conserved motifs and gene structures. The <i>cis</i>-element analysis revealed that hormone response elements as well as light and stress response elements were widely rich in the <i>AREB/ABF</i>s. A prediction analysis of the orchid <i>ABRE</i>/<i>ABF</i>-mediated regulatory network was further constructed through <i>cis</i>-regulatory element (CRE) analysis of their promoter regions. And it revealed that several dominant transcriptional factor (TF) gene families were abundant as potential regulators of these orchid <i>AREB/ABF</i>s. Expression profile analysis using public transcriptomic data suggested that most <i>AREB/ABF</i> genes have distinct tissue-specific expression patterns in orchid plants. Additionally, DcaABI5 as a homolog of ABA INSENSITIVE 5 (ABI5) from <i>Arabidopsis</i> was selected for further analysis. The results showed that transgenic <i>Arabidopsis</i> overexpressing <i>DcaABI5</i> could rescue the ABA-insensitive phenotype in the mutant <i>abi5</i>. Collectively, these findings will provide valuable information on <i>AREB/ABF</i> genes in orchids.