Amphiuma is a genus of aquatic salamanders from the United States, the only extant genus within the family Amphiumidae. They are colloquially known as amphiumas. They are also known to fishermen as "conger eels" or "Congo snakes", which are zoologically incorrect designations or misnomers, since amphiumas are actually salamanders (and thus amphibians), and not fish, nor reptiles. Amphiuma exhibits one of the largest complements of DNA in the living world, around 25 times more than a human.
Amphiumas inhabit the southeastern part of the United States. They share much of the same distribution with the sirens, although they are not closely related.
In the past, amphiumas had a wider geographic range throughout North America, ranging all the way north to Wyoming.