China and Russia are both keen to exploit cutting-edge technologies for military use. Most of these advanced technologies are embedded in the so-called fourth industrial revolution (4IR), such as artificial intelligence (AI) and machine learning, automation and robotics, quantum computing, big data, 5G networking, and the “Internet of Things” (IoT). At the same time, most research and development (R & D) taking place in the 4IR is occurring in the commercial realm. The usefulness of 4IR technologies to future military capabilities will depend on how well countries can leverage breakthroughs in commercial R & D, via military-civil fusion (MCF). China and Russia are pursuing concurrent and often intertwined R & D programs to develop and advance 4IR technologies in their respective countries—particularly AI—and to subsequently utilize these technologies (via MCF) in military applications. Their mutual interests in exploiting cutting-edge technologies to underwrite military modernization could motivate Beijing and Moscow to collaborate on future 4IR R & D. Nevertheless, such cooperation could be limited. In particular, Russia lacks the resources or overall technological capacities (money and manpower, plus an already low level of innovation in the national economy) to function as an equal to China, and it may not wish to play the junior partner in such a relationship.