The book entitled Rheology of emulsions and suspensions is structured in 2 chapters and includes the rheology of emulsion and rheology dense granular suspension. Chapter 1 includes the following subchapters: Emulsion Formation Stability and Rheology. Chapter 2 rheology of dense granular suspensions includes subchapters: the suspension as a single effective fluid beyond the single-fluid view: two-phase flow an alternative frictional approach microscopic origin of the rheology beyond steady flows and toward more complex suspensions.