HRS

HRS is a three letter acronym that may stand for:

* the Hawaii Revised Statutes, the laws governing the State of Hawaii
* the Head-Royce School, a college-preparatory, K-12 school in Oakland, California
* the Health and Retirement Study, conducted by the University of Michigan
* the High Resolution Spectrograph, a spectrograph installed on the Hubble Space Telescope
* Hip replacement surgery
* Hot Rolled Steel
* the Historical Records Survey, a project of the Works Progress Administration
* Holidaysburg and Roaring Spring Railroad reporting mark|HRS
* the House Rabbit Society, a non-profit organization concerned with the welfare of domestic rabbits.
* an abbreviation for hours, as in I have been studying for the past 4 hrs.
* Helena Romanes School and Sixth Form Centre
* pre-1962 United States Marine Corps designation for the Sikorsky S-55 helicopter
*In cell biology, Hepatocyte growth factor-regulated tyrosine kinase substrate (Hrs) is a protein associated with the endosome that sorts certain activated receptors toward degradation by the lysosome.
*Hepatorenal syndrome, acute renal failure in the setting of liver cirrhosis.
*Hrvatski Radioamaterski Savez, an amateur radio organization in Croatia