The STAR Fluctuations & Particle Identification workshop, at Rice University on May 23-25, 2012, will focus on the topics of fluctuations in heavy ion collisions and the techniques used for particle identification in the analysis of these collisions. At this workshop, STAR experimentalists and invited theorists will discuss the theory, the analysis methods, and the results, with the goal of further developing the plan towards the publication of final results. The consistent and effective use of the particle identification capabilities of the TPC dE/dx, the Time of Flight system, and the calorimeters, is a particularly crucial part of fluctuation analyses and will also be discussed at this meeting.