RH, Rh, rH, or rh may stand for:
Rhode Island (/ˌroʊd ˈaɪlənd/), officially the State of Rhode Island and Providence Plantations, is a state in the New England region of the northeastern United States.
The Rhine (Latin: Rhenus, Romansh: Rein, German: Rhein, French: le Rhin, Dutch: Rijn) is a European river that begins in the Swiss canton of Graubünden in the southeastern Swiss Alps, forms part of the Swiss-Austrian, Swiss-Liechtenstein, Swiss-German and then the Franco-German border, then flows through the Rhineland and eventually empties into the North Sea in the Netherlands.
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, often abbreviated as R&B or RnB, is a genre of popular African-American music that originated in the 1940s.
Rhetoric is the art of discourse, wherein a writer or speaker strives to inform, persuade or motivate particular audiences in specific situations.
Rhodesia (/roʊˈdiːʒə/), commonly known from 1970 onwards as the Republic of Rhodesia, was an unrecognised state in southern Africa from 1965 to 1979, equivalent in territorial terms to modern Zimbabwe.
The Rh blood group system (including the Rh factor) is one of thirty-five known human blood group systems.
Rhodes (Greek: Ρόδος, Ródos [ˈroðos]) is the largest of the Dodecanese islands in terms of land area and also the island group's historical capital.