Campylorhynchus is a genus of wrens, which has at least 15 described species. At 17–22 cm (6.8-8.7 in) long, these are the largest-bodied of wrens, including the largest species, the giant wren. Member species are found in South and Central America and in some cases, as far north as the southwestern United States.

Wrens are a family of brown passerine birds in the predominantly New World family Troglodytidae. The family includes 88 species divided into 19 genera. Only the Eurasian wren occurs in the Old World, where, in Anglophone regions, it is commonly known simply as the "wren", as it is the originator of the name. The name wren has been applied to other, unrelated birds, particularly the New Zealand wrens (Acanthisittidae) and the Australian wrens (Maluridae).