Ahr is a tributary of the Rhine River in Germany.

AHR, AhR, Ahr, or AHr may also refer to:

Places

• Ahr (South Tyrol), the Ahr tributary in South Tyrol, Italy
• Ahr Hills, range of low mountains in Germany
• Ahr (wine region), Germany

People

• George W. Ahr (1904–1993), American prelate of the Roman Catholic Church
• Gustav Elijah Åhr (1996–2017), American singer and songwriter, known professionally as Lil Peep

Science and medicine

• aHR, adjusted hazard ratio
• AHr, ampere hour
• Airway hyper-responsiveness
• Aqueous homogeneous reactor
• Aryl hydrocarbon receptor (AhR), a protein

Organizations and companies

• Abbey Holford Rowe, architecture firm
• Advancing Human Rights
• Air Adriatic (ICAO airline code AHR), now defunct
• The American Historical Review, a scholarly journal

Other

• Ahirani language (ISO-639-3 code ahr)
• Assisted Human Reproduction Act

See also

• AAR (disambiguation)
• AH (disambiguation)
• Ahir, an Indian caste
• AHRC (disambiguation)
• AHRS, attitude and heading reference system
• AR (disambiguation)
• ARR (disambiguation)