<p>Transfrontier Conservation Areas (TFCAs) in Southern Africa are widely celebrated as borderless landscapes capable of reconciling biodiversity conservation, regional integration, tourism, and rural development. This paper argues, however, that TFCA space is neither borderless nor stable. Rather, it is a politically contested and continually reworked socio-ecological formation produced through the uneven mobilities of wildlife, local communities, infrastructures, institutions, and climate pressures. Drawing on a critical theoretical review of political ecology, mobility studies, multispecies governance, and transboundary conservation scholarship, the paper shows that TFCA practice remains deeply anchored in a sedentary spatial logic. Wildlife mobility is legitimised as ecological connectivity and elevated as the rationale for corridors, cross-border planning, and landscape-scale conservation, while many human mobilities, including grazing, foraging, informal exchange, and cross-border livelihood movement, are restricted, criminalised, or displaced. This selective recognition of movement reveals that TFCAs function not simply as conservation spaces, but as differentiated mobility regimes structured by unequal power and competing territorial claims. Climate change intensifies these tensions by destabilising resource access, altering wildlife movement, and producing climate borderlands where ecological dynamism collides with rigid governance frameworks. In response, the paper advances the concept of nomadic ecologies to theorise TFCAs as mobile, provisional, contested, and politically uneven landscapes in motion. It argues that more just and effective transfrontier conservation requires a shift from technocratic territorial control toward nomadic governance grounded in mobility-sensitive planning, cross-border institutional flexibility, recognition of local mobility knowledge, and multispecies justice.</p>