This assay seeks to provide a typology of public theologies. Public theology, though, appears in a philosophical-political context in which many are concerned rather with maintaining a sphere of secularity and limiting religion. Increasingly, voices will be raised that say religion is a private matter. Besides these "external" issues, the demarcation of boundaries also remains problematic. This articles takes its cue from (1) the self-referential term "public theology", but also (2) from options gleaned from theological history, and (3) fundamental socio-analytical, considerations suggesting seven forms of public theology. Finally, in years to come it can be expected that the profile of public theology will be further sharpened and it may even consolidate itself into a distinct programme. However, for this to happen, certain challenges need to be faced. There are seven suggestions for certain challenges need to be faced in the future.