Henry II of Reuss (younger line) (10 June 1572 in Gera – 23 December [O.S. 13 December] 1635 in Gera), nicknamed the Posthumous because his father died two months before he was born, was Lord of Gera, Lord of Lobenstein and Lord of Oberkranichfeld.

Reuss was the name of several historical states located in present-day Thuringia, Germany. Several lordships of the Holy Roman Empire which arose after 1300 and became Imperial Counties from 1673 and Imperial Principalities in the late 18th century were ruled by the House of Reuss.