<p>The study explores the phytochemical composition, nutritional profile, and biological properties of <i>Zingiber rubens</i> Roxb. rhizomes, a Zingiberaceae family species renowned for its medicinal and economic importance. Native to tropical and subtropical regions, this plant is rich in bioactive compounds such as phenolics, flavonoids, tannins, and alkaloids, which are linked to antioxidant, antimicrobial, and anti-inflammatory properties. Antioxidant activity was assessed using DPPH, ABTS, and FRAP assays, revealing significant radical scavenging potential with low IC₅₀ values. Nutritional analysis showed high levels of protein, lipids, and essential minerals, including calcium, magnesium, and iron, enhancing its value as a functional food ingredient. Correlations between minerals and phytochemicals emphasized their contribution to antioxidant efficacy and other biological activities. These findings highlight <i>Z. rubens</i> as a nutritionally and pharmacologically valuable species, supporting its role in traditional medicine and its potential for applications in modern therapeutics and nutraceuticals.</p>