Trigonocephalus is a taxonomic synonym that may refer to:
- Gloydius, a.k.a. Asian moccasins, a genus of venomous pitvipers found in Asia
- Lachesis, a.k.a. bushmasters, a genus of venomous pitvipers found in the remote, forested areas in Central and South America
This disambiguation page lists articles about taxa associated with the same name.
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