| Native Name: | Herrschaft (Grafschaft, Fürstentum) Reuß-Lobenstein |
| Conventional Long Name: | Lordship (County, Principality) of Reuss-Lobenstein |
| Common Name: | Reuss-Lobenstein |
| Era: | Early Modern Age |
| Status: | Vassal |
| Status Text: | State of the Holy Roman Empire, then State of the Confederation of the Rhine |
| Government Type: | Principality |
| Year Start: | 1425 |
| Year End: | 1824 |
| Life Span: | 1425–1547 1647–1824 |
| Event Pre: | Partitioned from Reuß-Gera |
| Date Pre: | 1425 |
| Event Start: | Annexed to Reuß-Plauen |
| Date Start: | 1547 |
| Event1: | Re-created by partition from Reuß-Schleiz |
| Date Event1: | 1647 |
| Event2: | Raised to county |
| Date Event2: | 1673 |
| Event3: | Partitioned to create Reuß-Hirschberg and Reuß-Ebersdorf |
| Date Event3: | 1678 |
| Event4: | Partitioned to create Reuß-Selbitz |
| Date Event4: | 1710–1805 |
| Event End: | Raised to principality |
| Date End: | 1790 |
| Event Post: | Inherited by R-Ebersdorf |
| Date Post: | 1824 |
| P1: | Reuß-Gera |
| P2: | Reuß-Schleiz |
| Flag P2: | Flagge Fürstentum Reuß jüngere Linie.svg |
| S1: | Reuß-Plauen |
| S2: | Reuß-Lobenstein-Ebersdorf |
| Flag S2: | Flagge Fürstentum Reuß jüngere Linie.svg |
| Flag Type: | Flag |
| Symbol: | Reuss Junior Line |
| Image Map Caption: | The Reuss Junior Line within Thuringia |
| Capital: | Neundorf bei Lobenstein |
Reuss-Lobenstein (German: link=no|Reuß-Lobenstein) was a state located in the German part of the Holy Roman Empire.
The members of Reuss-Lobenstein family belonged to the Reuss Junior Line. Reuss-Lobenstein has existed on two occasions, it was firstly created in 1425 as a lordship with Heinrich II, Lord of Reuss-Lobenstein becoming the first ruler. The first Lordship of Reuss-Lobenstein came to an end in 1547 when the territory went to Reuss-Plauen.
Reuss-Lobenstein was recreated in 1647 again as a lordship which it remained until 1673 when the title of lord was upgraded to count. Following the death of Count Henry X in 1671, Reuss-Lobenstein was ruled jointly by his three sons Heinrich III, Heinrich VIII and Heinrich X. In 1678 Reuss-Lobenstein was partitioned with Heinrich III remaining Count of Reuss-Lobenstein, Heinrich VIII becoming Count of Reuss-Hirschberg and Heinrich X becoming the Count of Reuss-Ebersdorf. Reuss-Lobenstein was partitioned for a second time in 1710 following the death of Heinrich III with Reuss-Selbitz being created for a younger son Heinrich XXVI while his eldest son Heinrich XV succeeded him as count of Reuss-Lobenstein.
Reuss-Lobenstein was raised to a principality in 1790 and joined the Confederation of the Rhine on 15 December 1806. With the death of Prince Heinrich LIV in 1824 the Reuss-Lobenstein line became extinct and was inherited by the Prince of Reuss-Ebersdorf.
To Reuss-Plauen, 1547
Raised to county, 1673
Raised to principality, 1790
To Reuss-Ebersdorf, 1824