R3, R.III or R-3 or R/3 may refer to:
==Aviation== Aviatik R.III, a German aircraft DFW R.III, a World War I German bomber aircraft Loring R-III, a Spanish reconnaissance biplane Ross R-3 glider Tupolev R-3 Soviet reconnaissance aircraft Yakutia Airlines IATA airline designator
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).