Marque Ventures is a venture capital firm backing early-stage companies in defense, manufacturing, and deep tech, with a focus on American businesses aligned with U.S. Department of Defense and Intelligence Community needs. Its portfolio exposure includes aerospace, AI, hardware, industrial technology, drones, space, security, enterprise software, and HR/workforce-management technology, and it also has UK investment activity. It is most relevant for founders building defense-use-case technologies and mission-critical industrial or enterprise platforms.