This paper reviews dyadic psychosocial intervention approaches that flexibly incorporate both dyad members despite challenges to equitable involvement due to cognitive limitations or limited availability. We provide an overview, analysis, and examples for the following dyadic intervention approaches: (1) shared interventions that involve each dyad member equitably (i.e., higher care recipient cognition, higher care-partner availability); (2) patient-focused interventions that primarily engage care recipients with early stages of neurocognitive disorders, yet include care-partners in select sessions and target dyadic and relationship needs (i.e., higher care recipient cognition, lower care-partner availability); and (3) care-partner focused interventions that primarily engage care-partners, yet still address care recipient and relationship needs (i.e., lower care recipient cognition, higher care-partner availability). In our review, we propose a flexible definition of dyadic psychosocial intervention that considers the continuum of individuals' involvement, measurement, content, and conceptual background. We conclude with a discussion of implications for neuropalliative care.