Transcaspian Oblast (, Zakaspiyskaya oblast), or Transcaspia, was the name used from the second half of the 19th century until 1924 for the section of Russian Empire (and, for a few years, early Soviet Russia) to the east of the Caspian Sea, bounded to the south by Iran's Khorasan Province and Afghanistan, to the north by the former Russian province of Uralsk, and to the northeast by the former Russian protectorates of Khiva and Bukhara. Area, 212,545 sq.