Glycerol,　being　either　a　primary　by-product　of　biodiesel　manufacture　or　a　platform　molecule　from　sugars,　is　of　significant　interest　as　a　renewable　biomass　because　it　is　a　highly　functionalized　and　versatile　organic　building　block　for　the　synthesis　of　value-added　fine　chemicals.　In　particular,　selective　oxidation　of　glycerol　to　various　industrially　valuable　products　by　heterogeneous　photocatalysis　using　solar　light　as　free　energy　and　molecular　oxygen　as　benign　oxidant　under　ambient　conditions　is　extremely　attractive.　However,　a　highly　selective,　heterogeneous　visible-light　photocatalyst　utilized　for　aerobic　oxidation　of　glycerol　has　been　unavailable.　To　date,　the　discovery　or　design　of　a　visible-light-driven,　highly　selective　photocatalyst　for　selective　oxidation　of　glycerol　to　a　specific　product　is　particularly　challenging　in　heterogeneous　photocatalytic　selective　transformation.　Herein,　we　for　the　first　time,　report　the　identification　of　flower-like　Bi2WO6　as　a　highly　selective　visible-light　photocatalyst　toward　aerobic　selective　oxidation　of　glycerol　to　dihydroxyacetone　using　oxygen　as　oxidant　in　water　at　room　temperature　and　atmospheric　pressure.　A　rationale　for　the　observed　high　selectivity　over　photocatalyst　flower-like　Bi2WO6　is　provided.　©　2013　Royal　Society　of　Chemistry.