Zeledon's antbird (Percnostola zeledoni ) is a species of antbird in the family Thamnophilidae. It is found at low levels in humid forests from Nicaragua to Panama, and in the Chocó of western Colombia and western Ecuador. Zeledon's antbird feeds on insects, and regularly follows swarms of army ants in order to catch prey flushed by the swarms, but it is not an obligate ant-follower like some species of antbirds.
Zeledon's antbird was described by the American ornithologist Robert Ridgway in 1909 and given the binomial name Myrmeciza zeledoni. It was subsequently treated as a subspecies of the blue-lored antbird. A molecular phylogenetic study published in 2013 found that the genus Myrmeciza was polyphyletic. In the resulting rearrangement to create monophyletic genera Zeledon's antbird was moved to the newly erected genus Hafferia. The common name and Latin binomial commemorate the Costa Rican ornithologist José Cástulo Zeledón.
There are two subspecies:
