Blechnum dendrophilum is a species of fern in the Blechnaceae family. It is endemic to Ecuador and known only from Napo Province and Pichincha Province. It was first described by Luis Sodiro in the late 19th century. Although there are no known conservation measures, it has been recorded from Illinizas Ecological Reserve. Its natural habitat is subtropical or tropical moist montane forests. It is threatened by habitat loss for agriculture.