 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, wideband saturable absorbers for Q-switching and mode locking fiber lasers. We focus specifically on the family of few-layer transition metal dicalcogenides, including MOS2, MOSC2 and WS2. This article was authored by Robert the First Woodward and Edmund J. R. Kelleher.