Rosemary (Rosmarinus officinalis Linn. or Salvia rosmarinus Spenn.) is an aromatic herb renowned for its culinary, medicinal, and industrial significance. This review offers a multifaceted exploration of rosemary, delving into its nutritional composition, traditional culinary applications, and historical uses in traditional medicine. The review extends to cosmetic and pharmaceutical applications, elucidating rosemary’s role as a natural preservative and its integration into cosmeceutical and pharmaceutical formulations. Extraction methods, both classical and contemporary, are critically examined, with an emphasis on recent sustainable approaches and their impact on bioactive compounds. This work concludes with a forward-looking perspective, discussing innovative extraction techniques, advanced technologies, and the potential commercial viability of rosemary-related industries. This comprehensive review serves as a valuable resource, offering insights into the diverse dimensions of rosemary, from traditional applications to cutting-edge advancements in extraction science.