The Mount Tapulao forest mouse (Apomys brownorum) is a forest mouse endemic to the Mount Tapulao area in the Philippines.

[1] It is named after the American zoologist Barbara Elaine Russell Brown.

[3] On its dorsal side, the mouse has long, dense, soft, dark brown fur, with dark gray ventral fur turning a lighter gray-brown at the tips.

Its tail is bicolored, "dark grayish-brown dorsally and nearly white ventrally.

"[3] The Mount Tapulaou forest mouse lives in old growth cloud forests and regenerating secondary forests at a height of 2024 m, with a lower limit somewhere between 1690 m and 2024 m. It is unknown how extensive chromium mining of the habitat affects the species.