Solms-Laubach was a County of southern Hesse and eastern Rhineland-Palatinate, Germany.

In 1537 Philip, Count of Solms-Lich, ruling count at Lich, purchased the Herrschaft Sonnewalde in Lower Lusatia which he left to his younger son Otto of Solms-Laubach (1496–1522), together with the county of Laubach.

While Lich and Laubach were counties with imperial immediacy, Sonnewalde remained a semi-independent state country within the March of Lusatia (the latter being an immediate state of the Holy Roman Empire).

In 1596 he also purchased the nearby Herrschaft of Baruth which was also elevated to a state country within the March of Lusatia.

With the death of Count Charles Otto in 1676, it was inherited by Solms-Baruth and recreated as a partition in 1696.