In the pursuit of innovative vaccine delivery methods, this review explores the potentialof spray drying for formulating inhalable vaccines. Traditional vaccine approaches facechallenges in administration, storage, and accessibility, especially in resource-limited settings.Inhalable vaccines, utilizing techniques like spray drying, offer a promising solution. By bypassingsystemic circulation and directly targeting the respiratory mucosa, inhalable vaccinescan induce robust mucosal and systemic immune responses. Spray drying, a versatile technique,is particularly well-suited for formulating inhalable vaccines. It transforms liquid vaccineformulations into finely dispersed powders, enabling efficient delivery to the lungs. Thisreview delves into the unique characteristics of spray-dried particles, their impact on immunesystem activation, and their role in overcoming traditional vaccine limitations. The explorationemphasizes the potential for spray drying to revolutionize vaccine development, providing acomprehensive overview of its applications and contributions to improving global publichealth.