County of Manderscheid-Keil
- Nation: Manderscheidian Germany
- Predecessor: County of Manderscheid
- Chronology
- 1488: Created upon the partition of Manderscheid
- 1527: Acquired Lordships of Salm (Eifel) and Dollendorf/beginning of database
- 1742: Terminated upon the extinction of the Kail line
- Successor: Manderscheid-Blankenheim
- Personal unions
- as primary
- Lordship of Dollendorf (1527-1742)
- Lordship of Salm (Eifel) (1527-1742)
- as primary
- Insourcings
- from Duchy of Luxembourg
- Lordship of Oberkail (including Falkenstein) (1488-1556-1742)
- County of Manderscheid-Niederburg (1615-1642)
- Herrschaft Bettingen (50% share) (1615-1742)
- from Electorate of Trier
- Gericht Demerath (1573-1742)
- Hochgericht Lüxem (part) (1669-1742)
- from Duchy of Luxembourg
