Arnhold's Mouse Lemur
Microcebus arnholdi
- Vulnerable
- Card rarity: Rare
- Mammals

Arnhold's mouse lemur or the Montagne d'Ambre mouse lemur is a species of mouse lemur endemic to Madagascar. Its holotype was first collected on 27 November 2005, and was first described in 2008. According to genetic tests, it is genetically distinct from its closest sister taxa, the Sambirano mouse lemur.
Classification
- Class
- Mammalia
- Order
- Primates
- Family
- Cheirogaleidae
- Genus
- Microcebus