Sustainability is one of the foremost challenges facing the world, especially in the fields of interior design and furniture manufacturing. The concept of direct digital manufacturing serves as an effective tool for enhancing sustainability in interior design. This concept combines technological innovation with environmental commitment, allowing for the creation of efficient and beautiful interior spaces. Direct digital manufacturing refers to the use of techniques such as 3D printing and computer numerical control (CNC) machines in producing interior design elements. These technologies enable designers to create complex and precise forms, facilitating innovation and customization to meet design needs. The research problem lies in how to achieve effective integration between direct digital manufacturing and sustainability principles in interior design elements. This problem encompasses several aspects, such as a lack of understanding about integration and environmental challenges. The descriptive-analytical method is used to analyze case studies of successful applications of direct digital manufacturing in sustainable interior design. The importance of the research lies in highlighting direct digital manufacturing as a technological tool capable of improving design efficiency and reducing environmental impact. The research aims to analyze the effectiveness of integration in achieving harmony between direct digital manufacturing and sustainability in interior design elements. One of the key findings is the benefits of integrating sustainability through the use of sustainable materials, as direct digital manufacturing allows for the use of new environmentally friendly materials. Encouraging innovation in the use of sustainable materials and digital technologies is a crucial recommendation for this research. Increasing awareness among designers and consumers about the benefits of digital manufacturing and sustainability is also essential.