Peace Engineering is the application of Science, Technology, Engineering, Arts and Mathematics (STEAM) principles, sustainable practices, cultural sensitivity and innovation to promote and support peace, and its profile is rising among institutions around the world. Peace Engineering’s mission is to actively cultivate a culture of peace, and this mission requires that peace engineers be well-rounded global thinkers and doers, cognizant of: (i) their professional and personal ethical responsibilities; (ii) their role in society as citizen engineers and/or scientists, practitioners or policymakers; and (iii) the intended and unintended consequences of their decisions on the design, planning, trusted data collection and processing generating actionable knowledge, management, and operation of projects in different socioeconomic, cultural and political situations. Peace engineering is defined not only by its sociotechnical application, but by its ethos and aims with an agenda formulated in service to social justice. Notably, there are urgent calls to action by the NAE, the Nobel Prize Summit, the UN and scientists worldwide to address and solve crucial and widely recognized global challenges to peace and security before they become more complex and more environmentally, financially, and socially costly; before we reach the point of no return. Peace Engineering answers these calls by recognizing the important contribution that engineering, the hard and social sciences and other disciplines such as law and finance make toward the building of a more sustainable, stable, secure, equitable and peaceful world.