Visible light-mediated oxidative dehydrogenation (ODH) of partially saturated heterocycles and different cross dehydrogenative coupling (CDC) reactions using heterogeneous photoredox catalyst is described in this paper. A systematic study led to an ODH of partially saturated heterocycles and different CDC reactions in very good-to-excellent yields. Oxygen is used as a clean oxidant in both ODH and CDC reactions. The methodology is atom economic and exhibits excellent tolerance toward various functional groups, and broad substrate scopes. This methodology was found to be suitable for scale-up and reusability.