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The SAUR (small auxin-up RNA) family constitutes a category of genes that promptly respond to the hormone auxin and play a pivotal role in diverse biological processes encompassing plant growth and the response to abiotic stress. <i>Santalum album</i> L., a semi-parasitic evergreen tree, is renowned for its economically valuable essential oils, positioning it among the most prized tree species. In this study, a meticulous identification and comprehensive analysis of 43 <i>SAUR</i> genes was conducted within <i>S. album</i>. Based on phylogenetic relationships, the <i>SaSAUR</i> genes were systematically categorized into five groups. A collinearity analysis revealed intriguing insights, disclosing 14 segmental duplications and 9 tandem duplications within the <i>SaSAUR</i> genes, emphasizing the pivotal role of duplication in the expansion of this gene family. Noteworthy variations in the expression levels of <i>SaSAUR</i> genes were observed by delving into the <i>SaSAUR</i> transcriptome data from various tissues, including leaves, roots, and heartwood, as well as under salt-stress conditions. Notably, <i>SaSAUR08</i> and <i>SaSAUR13</i> were significantly upregulated in heartwood compared with roots and leaves, while <i>SaSAUR18</i> was markedly more expressed in roots compared with heartwood and leaves. Furthermore, <i>SaSAUR27</i> and <i>SaSAUR28</i> were found to respond closely to salt stress, hinting at their potential involvement in the salt-stress response mechanism. This research offers a comprehensive investigation of <i>SAUR</i> genes in <i>S. album</i> and establishes a foundation for future exploration of the <i>SAUR</i> gene family, particularly its relation to growth and salt-stress responses.