Trimeresurus flavomaculatus (Philippine pit viper)[4] is a venomous pit viper species endemic to the Philippines.

[4] Found on the Philippine islands of Agutayan, Batan, Camiguin, Catanduanes, Dinagat, Jolo, Leyte, Luzon, Mindanao, Mindoro, Negros, Panay and Polillo.

The type locality given is "Philippine Islands".

Leviton (1964) proposed that this be restricted to "Luzon Island".

[2] Gumprecht (2001, 2002) relegates T. f. halieus to synonymy and elevates T. f. mcgregori to a full species.