Background: Acute Respiratory Tract Infections (ARIs) are a major public health problem and one of the leading causes of infectious diseases' morbidity and mortality among older adults. Objective: is to determine the effect of respiratory wellness educational program on preventive behaviors of respiratory tract infections among community-dwelling older adults. Materials and Methods: This study followed a quasi-experimental research design. Settings: The study was carried out in three elderly clubs in Damanhour city, El-Behaira Governorate. Subjects: The study included 140 older adults that were selected through a convenient sampling technique. Tools: Four tools were used: a short portable mental status questionnaire, socio-demographic and clinical data of community-dwelling older adults; community-dwelling older adult's knowledge assessment about respiratory infection structured interview schedule and respiratory infection preventive behaviors questionnaire for older adults. Results: A highly statistically significant improvement in the knowledge and preventive behaviors among the studied older adults were observed after program implementation. Conclusion: Respiratory wellness educational program proved to be effective in increasing the ARI related knowledge and preventive behaviors among community-dwelling older adults. Recommendations: This study recommends the implementation of more extensive educational programs for community-dwelling older adults in different health care settings.