Wrens are small birds with a characteristic upright tail. They are in the large family of Troglodytidae which includes 20 genera and 80 species. Photos are presented in Comingsbirds.com for those highlighted in red, including the Costa Rica wrens.

Genus Odontorchilus
Grey-mantled Wren Odontorchilus branickii
Tooth-billed Wren Odontorchilus cinereus
Genus Salpinctes
Rock Wren Salpinctes obsoletus
Genus Microcerculus
Flutist Wren Microcerculus ustulatus
Southern Nightingale-Wren Microcerculus marginatus
Northern Nightingale-Wren Microcerculus philomela
Wing-banded Wren Microcerculus bambla
Genus Catherpes
Canyon Wren Catherpes mexicanus
Genus Hylorchilus
Nava's Wren Hylorchilus navai
Sumichrast's Wren or Slender-billed Wren Hylorchilus sumichrasti
Genus Campylorhynchus
Band-backed Wren Campylorhynchus zonatus
Bicolored Wren Campylorhynchus griseus
Boucard's Wren Campylorhynchus jocosus
Cactus Wren Campylorhynchus brunneicapillus
Fasciated Wren Campylorhynchus fasciatus
Giant Wren Campylorhynchus chiapensis
Gray-barred Wren Campylorhynchus megalopterus
Rufous-naped Wren Campylorhynchus rufinucha
Spotted Wren Campylorhynchus gularis
Stripe-backed Wren Campylorhynchus nuchalis
Thrush-like Wren Campylorhynchus turdinus
White-headed Wren Campylorhynchus albobrunneus
Yucatan Wren Campylorhynchus yucatanicus
Genus Thryomanes
Bewick's Wren Thryomanes bewickii
Genus Thryothorus
Carolina Wren Thryothorus ludovicianus
White-browed Wren Thryothorus ludovicianus albinucha
Bewick's Wren Thryomanes bewickii
Genus Cinnycerthia
Fulvous Wren Cinnycerthia fulva
Peruvian Wren Cinnycerthia peruana
Rufous Wren Cinnycerthia unirufa
Sepia-brown Wren or Sharpe's Wren Cinnycerthia olivascens
Genus Cantorchilus formerly included in Thryothorus
Stripe-breasted Wren Cantorchilus thoracicus
Stripe-throated Wren Cantorchilus leucopogon
Plain Wren Cantorchilus modestus
Canebrake Wren Cantorchilus modestus zeledoni
Riverside Wren Cantorchilus semibadius
Bay Wren Cantorchilus nigricapillus
Superciliated Wren Cantorchilus superciliaris
Buff-breasted Wren Cantorchilus leucotis
Fawn-breasted Wren Cantorchilus guarayanus
Long-billed Wren Cantorchilus longirostris
Genus Thryophilus formerly included in Thryothorus
Gray Wren Thryophilus griseus
Rufous-and-white Wren Thryophilus rufalbus
Niceforo's Wren Thryophilus nicefori
Sinaloa Wren Thryophilus sinaloa
Genus Pheugopedius formerly included in Thryothorus
Moustached Wren Pheugopedius genibarbis
Coraya Wren Pheugopedius coraya
Whiskered Wren Pheugopedius mystacalis
Plain-tailed Wren Pheugopedius euophrys
Black-bellied Wren Pheugopedius fasciatoventris
Black-throated Wren Pheugopedius atrogularis
Sooty-headed Wren Pheugopedius spadix
Speckle-breasted Wren Pheugopedius sclateri
Happy Wren Pheugopedius felix
Inca Wren Pheugopedius eisenmanni
Rufous-breasted Wren Pheugopedius rutilus
Spot-breasted Wren Pheugopedius maculipectus
Banded Wren Pheugopedius pleurostictus
Genus Cyphorhinus
Chestnut-breasted Wren Cyphorhinus thoracicus
Musician Wren Cyphorhinus aradus
Song Wren Cyphorhinus phaeocephalus
Genus Uropsila
White-bellied Wren Uropsila leucogastra
Genus Henicorhina - wood-wrens
Bar-winged Wood-Wren Henicorhina leucoptera
Gray-breasted Wood-Wren Henicorhina leucophrys
White-breasted Wood-Wren Henicorhina leucosticta
Munchique Wood-Wren, Henicorhina negreti
Genus Thryorchilus
Timberline Wren Thryorchilus browni
Genus Troglodytes
House Wren, Troglodytes aedon
Clarion Wren, Troglodytes tanneri - formerly included in T. aedon
Socorro Wren, Troglodytes sissonii - formerly included in T. aedon
Cobb's Wren, Troglodytes cobbi - formerly included in T. aedon
Rufous-browed Wren, Troglodytes rufociliatus
Tepui Wren, Troglodytes rufulus
Mountain Wren, Troglodytes solstitialis
Ochraceous Wren, Troglodytes ochraceus
Santa Marta Wren, Troglodytes monticola
Genus Cistothorus
Apolinar's Wren Cistothorus apolinari
Marsh Wren Cistothorus palustris
Mérida Wren or Paramo Wren Cistothorus meridae
Sedge Wren Cistothorus platensis
Genus Ferminia
Zapata Wren Ferminia cerverai

Photos are presented on those highlighted in red.