JGR can refer to:
- Japanese Government Railways
- Java Gui for R
- Jet Grind Radio, a video game
- Joe Gibbs Racing, American professional racing organization
- John G. Roberts, Jr. (born 1955), Chief Justice of the United States
- Journal of Geophysical Research
- Jessica González-Rojas (born 1976), New York State Assemblymember for the 34th Assembly District