The Tyrant Flycatchers (Tyrannidae) are a family of passerine birds which occur throughout North and South America, but are mainly Neotropical in distribution. They are now considered the largest family of birds on Earth, with 412 species. In every country in the Americas, except for the United States and Canada, they are the most diverse avian family. It is also one of the most difficult to classify, full of cryptic species.

Some flycatchers are so cryptic that there remains controversy about whether 1 or 2 species are involved. Most, but not all, are rather plain, and many have erectile crests. As the name implies, most are insectivorous, but some will eat fruit or small vertebrates.