Trimeresurus mcgregori, commonly known as McGregor's pit viper[4] or the Batanes pit viper, is a species of venomous snake in the subfamily Crotalinae of the family Viperidae.

The specific name, mcgregori, is in honor of Australian-American ornithologist Richard Crittenden McGregor (1871–1936), who collected the type specimen,[6] and survived its bite.

[2] The preferred natural habitats of T. mcgregori are forest and shrubland, at altitudes from sea level to 800 m (2,600 ft), but it has also been found in agricultural areas.

[8] It was considered to be a subspecies of T. flavomaculatus by Alan E. Leviton (1961).

[2] It was re-elevated to a full species by Andreas Gumprecht (2001, 2002).