This chapter explores the contributions of contemporary Catholic theology to the notion of intergenerational justice in the context of the Fifth Industrial Revolution, characterized by technoscientific acceleration, automation, and the convergence between human life and the digital realm. Based on a hermeneutical and critical review of 36 key documents—including four papal encyclicals (Lumen Fidei, Laudato Si’, Fratelli Tutti, and Dilexit Nos) and 32 academic texts in ecotheology, moral theology, political philosophy, and environmental ethics—five emerging theological categories were identified: faith as an intergenerational bond, integral ecology as an ethic of care, spiritual discernment in response to technoscience, fraternity and communion as foundations of inclusive justice, and the pastoral and political implications of the magisterium. These categories form a coherent theological framework that reconfigures the relationship between time, creation, and human responsibility from an eschatological and communal perspective. The chapter argues that intergenerational justice is not merely an external ethical demand, but a constitutive dimension of Christian faith, rooted in the logic of gift, memory, and hope. By integrating theological reflection with public engagement, ecotheology emerges as a central current to respond, through the Gospel, to the challenges of ecological crisis and digital transformation. Caring for future generations thus appears as a concrete expression of Christian communion in times of environmental collapse and technological acceleration.