r100

R100 is a designation used for several unrelated things, spanning transportation, motorcycles, and technical labeling. The most prominent use in transportation is the British rigid airship R100, part of the Imperial Airship Scheme. Designed and built by Vickers, it operated from Cardington, England. In 1930 it completed a transatlantic flight to Canada and returned, highlighting long-range airship capability. Following the subsequent loss of its sister ship, R101, and a shift in policy, the airship program was terminated and R100 was dismantled in the early 1930s.

In motorcycles, R 100 refers to a family of BMW machines powered by a 980cc air-cooled boxer engine. These models were produced in the 1980s and early 1990s and are noted for touring versatility and the signature Boxer engine layout. Examples include variants such as the R 100 RS and the R 100 RT, among others.

Other uses of the R100 designation appear in various technical and consumer-product contexts as model numbers or part identifiers. In electronics documentation, R can be used as a decimal point, so R100 may show up in component markings or identifiers depending on regional notation. The exact meaning of R100 varies with the field and application, so disambiguation is important when encountering the term.