Koopman's pencil-tailed tree mouse

{{Short description|Species of rodent}}

{{speciesbox

| name = Koopman's pencil-tailed tree mouse

| status = VU | status_system = IUCN3.1

| status_ref = {{cite journal | author1 = Lunde, D. | author2 = Ruedas, L. | author3 = Musser, G. | title = Chiropodomys karlkoopmani | journal = IUCN Red List of Threatened Species | volume= 2008 | page = e.T4681A11082863 | year = 2008 | doi = 10.2305/IUCN.UK.2008.RLTS.T4681A11082863.en | doi-access = free }}

| taxon = Chiropodomys karlkoopmani

| authority = Musser, 1979

| synonyms =

}}

Koopman's pencil-tailed tree mouse (Chiropodomys karlkoopmani) is a species of arboreal rodent in the family Muridae. It is endemic to Pagai and Siberut islands in the Mentawai Islands, off the western coast of Sumatra in Indonesia.

Its natural habitat is tropical primary lowland forest. It is threatened by habitat loss (logging).