  We show that solar $\gamma$-ray observations can provide a complementary
probe of Dark Matter in scenarios where the interactions with the Standard
Model proceed via long-lived mediators. For illustration we consider a
simplified model which provides solar $\gamma$-ray fluxes observable with the
next generation $\gamma$-ray telescopes, while complying with the existing
experimental constraints. Our results suggest that solar $\gamma$-ray fluxes
can be orders of magnitude larger than the ones from the Galactic center, while
being subject to low backgrounds.
