Sung dynasty: in Chinese history you have the Northern Song (960-1127) and Southern Song (1127-1279) dynasties, which can be romanized to Sung instead of Song, most notably in the older Wade-Giles style that was in widespread use in the 19th century.
There's also a Liu Song dynasty (420-479 AD).
There is, however, no dynasty referred to in an unqualified manner as Song or Sung.