Barley (Hordeum vulgare Linn.) is one of the ancient, cultivated grains, widely utilized for food, feed, and commercial applications, including malting and brewing industries. Its adaptability to changing climates has made it a staple crop; however, barley production faces numerous challenges, including abiotic and biotic stresses, low soil fertility, and climate variability, all of which affect yield and quality. Enhancing barley’s quality is crucial to improving nutritional value, disease resistance, and industrial suitability. Traditional breeding methods have contributed to genetic improvement, but they are time-consuming and lack precision. The emergence of CRISPR-Cas gene editing has transformed barley enhancement by enabling precise modifications to genes responsible for grain quality, stress tolerance, and resistance to pathogens. Despite its efficiency, CRISPR-Cas genome editing faces limitations, including off-target mutations, regulatory constraints, and challenges in achieving high-frequency homology-directed repair (HDR) in plants. Future advancements aim to optimize Cas variants, improve editing efficiency, and integrate new techniques such as base and prime editing to overcome current barriers. As research progresses, CRISPR-Cas holds immense potential for developing superior barley varieties, ensuring higher yields, improved quality, and resilience to challenging environmental stressors, ultimately contributing to world hunger and sustainable agriculture.