Names: Brian D. Boe and Daniel K. Nakano Email addresses: brian at math dot uga dot edu, nakano at math dot uga dot edu Title: Representation type of the blocks of Category $O_S$ Current status: preprint Abstract: In this paper the authors investigate the representation type of the blocks of the relative (parabolic) category ${\cal O}_{S}$ for complex semisimple Lie algebras. A complete classification of the blocks corresponding to regular weights is given. The main results of the paper provide a classification of the blocks in the ``mixed'' case when the simple roots corresponding to the singular set and $S$ do not meet.