 Two-dimensional, 2D, nanomaterials are an emergent and promising platform for future photonic and optoelectronic applications. Here, we review recent progress demonstrating the application of 2D nanomaterials as versatile, wide-band saturable absorbers for Q-switching and mode-locking fiber lasers. We focus specifically on the family of few-layer transition metal di-calcogenides, including MOS-2, MOS-E2, and WS-2. This article was authored by Robert the First-Widward and Edmund J. R. Keller.