RGD
RGD may refer to:

RGD, the abbreviation for Arginylglycylaspartic acid
RGD-5, a Soviet/Russian hand grenade
RGD-33, a Soviet World War II-era hand grenade
Association of Registered Graphic Designers of Ontario or the related professional designation of Registered Graphic Designer
Radio Glas Drine, group of local commercial radio stations in Bosnia and Herzegovina
Rat genome database, a collection of genetic and genomic information about the rat
Reacting Gas Dynamics Laboratory at the Massachusetts Institute of Technology
Registrar General Department, a government agency responsible for civil registration in many Commonwealth countries