While phased array systems are gaining popularity in many wireless applications due to their ability to electronically control multiple beams and adaptively reduce interference, stove-piped approaches have limited their flexibility. The design of multifunction phased arrays, however, can allow future systems to simultaneously support more than one modality, which can include radar, communications, jamming, sensing, and/or other applications. Leveraging common hardware and frequency allocations not only allows these arrays to operate more efficiently, but also creates novel applications, such as integrated sensing and communications (ISAC) technology that can enable smart base stations in sixth-generation (6G) wireless communications networks. In this workshop, experts from academic, federal research institutions and industry will discuss the critical technologies that enable multifunction phased arrays, including in-band full-duplex (IBFD) operation. Presentations will contain details and measured results on state-of-the-art front-ends, digital signal processing and complete array systems.