Coburg (kōˈbŏrk) [key], city (1994 pop. 45,980), Bavaria, central W Germany, on the Itz River. Coburg's indsutries include lumber and paper milling, brewing, and the manufacture of glass, machinery, electrochemical equipment, and toys. Mentioned in the 11th cent., Coburg in 1353 passed to the house of Wettin. It was the alternate capital (with Gotha) of Saxe-Coburg-Gotha from 1826 to 1918 and joined Bavaria in 1920. The large ducal castle (16th cent.) was the residence of Martin Luther in 1530. The city has a modern convention hall (1962).