D-()-Malic acid is widely used in the food and beverage industry as an acidulant and flavor enhancer. It contributes a tart, fruity taste, making it a popular ingredient in candies, soft drinks, and fruit-flavored products. Its ability to balance sweetness and acidity improves the overall flavor profile of various food items.

In the pharmaceutical industry, it serves as an excipient in tablet formulations, aiding in the stabilization and controlled release of active ingredients. Additionally, it is used in cosmetic products for its moisturizing and exfoliating properties, helping to improve skin texture and hydration.

In agriculture, it is applied as a component in foliar sprays to enhance nutrient absorption in plants, promoting healthier growth and increased crop yields. Its chelating properties also make it useful in industrial cleaning agents for removing mineral deposits and rust.