| Native Name: | Grafschaft Sayn-Homburg |
| Conventional Long Name: | County of Sayn-Homburg |
| Common Name: | Sayn-Homburg |
| Era: | Middle Ages |
| Status: | Vassal |
| Empire: | Holy Roman Empire |
| Government Type: | Principality |
| Year Start: | 1283 |
| Year End: | 1384 |
| Event Start: | Partitioned from Sponheim-Sayn |
| Date Start: | 1283 |
| Event1: | Count marries heiress to Wittgenstein |
| Date Event1: | 1345 |
| Event End: | Counties merged |
| P1: | Sponheim-Sayn |
| S1: | Sayn-Wittgenstein |
| Capital: | Homburg |
Sayn-Homburg (not to be confused with the later state of Sayn-Wittgenstein-Homburg) was a medieval county of Germany with its seat at Homburg Castle. It was created as a partition of Sponheim-Sayn in 1283. In 1345, Salentin, the son of Count Godfrey, married the heiress of Wittgenstein and the Counties were united and, on his death, merged to form the County of Sayn-Wittgenstein.
To County of Sayn-Wittgenstein