GRP may refer to:
Biochemistry Gastrin-releasing peptide Grp78, Grp94, Grp170, glucose-regulated proteins Grape reaction product
Mathematics Grp, the Category of groups
Technology and materials Glass-reinforced-polymer, also known as Fiberglass, or Fibreglass. Gentoo Reference Platform
Transport Grove Park railway station, London, National Rail station code
Other uses Government resource planning US Grasslands Reserve Program Gross rating point Gross regional product GRP Records, an American jazz label Gurupi Airport, in Brazil