Rh

RH, Rh, rH, or rh may stand for:

Rheology (; from Greek ῥέω rhéō, "flow" and -λoγία, -logia, "study of") is the study of the flow of matter, primarily in a liquid state, but also as "soft solids" or solids under conditions in which they respond with plastic flow rather than deforming elastically in response to an applied force.

Rhode Island ( (listen)), officially the State of Rhode Island and Providence Plantations, is a state in the New England region of the United States.

The Rhine (Latin: Rhenus, Romansh: Rein, German: Rhein, French: le Rhin, Italian: Reno, Dutch: Rijn) is a European river that begins in the Swiss canton of Graubünden in the southeastern Swiss Alps, forms part of the Swiss-Liechtenstein, Swiss-Austrian, Swiss-German and then the Franco-German border, then flows through the German Rhineland and the Netherlands and eventually empties into the North Sea.

Rheumatoid arthritis (RA) is a long-term autoimmune disorder that primarily affects joints. It typically results in warm, swollen, and painful joints.

Rhythm and blues, commonly abbreviated as R&B, is a genre of popular music that originated in African American communities in the 1940s.

Rhodesia (, ) was a country in southern Africa from 1965 to 1979, equivalent in territory to modern Zimbabwe.

Rhodes (Greek: Ρόδος, Ródos [ˈroðos]) is the largest of the Dodecanese islands of Greece and is also the island group's historical capital.