Outstanding Paper Award Subcommittee of Kagaku Kogaku Ronbunshu has assessed the 74 papers published in volume 40 into 2014, and the editorial board finally selected the four papers for Kagaku Kogaku Ronbunshu Paper Awards of 2014; those are the papers on "Effect of Solution Concentration on Breakup of Electro-Sprayed Droplets and Emission of Solute Ions," "Effects of Channel Structure and Wettability on Liquid Water Transport in the Cathode of a Polymer Electrolyte Fuel Cell," "Development of a New Apparatus for Evaluating Flowability of Particle with Poor Flow Behavior," and "Fluid Mixing and Golden Ratio Condition."