Tyrannidae
- Yellow-bellied Tyrannulet Ornithion semiflavum
- Brown-capped Tyrannulet Ornithion brunneicapillus
- Northern Beardless Tyrannulet Camptostoma imberbe
- Southern Beardless Tyrannulet Camptostoma obsoletum
- Cocos Island Flycatcher Nesotriccus ridgwayi Outlying islands only Vulnerable
- Yellow Tyrannulet Capsiempis flaveola
- Yellow-crowned Tyrannulet Tyrannulus elatus
- Greenish Elaenia Myiopagis viridicata
- Yellow-bellied Elaenia Elaenia flavogaster
- Lesser Elaenia Elaenia chiriquensis
- Mountain Elaenia Elaenia frantzii
- Torrent Tyrannulet Serpophaga cinerea
- Ochre-bellied Flycatcher Mionectes oleagineus
- Olive-striped Flycatcher Mionectes olivaceus
- Sepia-capped Flycatcher Leptopogon amaurocephalus
- Slaty-capped Flycatcher Leptopogon superciliaris
- Rufous-browed Tyrannulet Phylloscartes superciliaris
- Rough-legged Tyrannulet Phyllomyias burmeisteri
- Mistletoe Tyrannulet Zimmerius vilissimus
- Northern Scrub-Flycatcher Sublegatus arenarum
- Black-capped Pygmy-Tyrant Myiornis atricapillus
- Scale-crested Pygmy-Tyrant Lophotriccus pileatus
- Northern Bentbill Oncostoma cinereigulare
- Slate-headed Tody-Tyrant Poecilotriccus sylvia
- Common Tody-Flycatcher Todirostrum cinereum
- Black-headed Tody-Flycatcher Todirostrum nigriceps
- Eye-ringed Flatbill Rhynchocyclus brevirostris
- Yellow-olive Flycatcher Tolmomyias sulphurescens
- Yellow-margined Flycatcher Tolmomyias assimilis
- Stub-tailed Spadebill Platyrinchus cancrominus
- Golden-crowned Spadebill Platyrinchus coronatus
- White-throated Spadebill Platyrinchus mystaceus
- Northern Royal-Flycatcher Onychorhynchus mexicanus
- Bran-colored Flycatcher Myiophobus fasciatus
- Ruddy-tailed Flycatcher Terenotriccus erythrurus
- Sulphur-rumped Flycatcher Myiobius sulphureipygius
- Black-tailed Flycatcher Myiobius atricaudus
- Tawny-chested Flycatcher Aphanotriccus capitalis Vulnerable
- Tufted Flycatcher Mitrephanes phaeocercus
- Olive-sided Flycatcher Contopus cooperi
- Dark Pewee Contopus lugubris
- Ochraceous Pewee Contopus ochraceus
- Western Wood-Pewee Contopus sordidulus
- Eastern Wood-Pewee Contopus virens
- Tropical Pewee Contopus cinereus
- Yellow-bellied Flycatcher Empidonax flaviventris
- Acadian Flycatcher Empidonax virescens
- Alder Flycatcher Empidonax alnorum
- Willow Flycatcher Empidonax traillii
- White-throated Flycatcher Empidonax albigularis
- Least Flycatcher Empidonax minimus Rare/Accidental
- Yellowish Flycatcher Empidonax flavescens
- Black-capped Flycatcher Empidonax atriceps
- Black Phoebe Sayornis nigricans
- Long-tailed Tyrant Colonia colonus
- Bright-rumped Attila Attila spadiceus
- Rufous Mourner Rhytipterna holerythra
- Dusky-capped Flycatcher Myiarchus tuberculifer
- Panama Flycatcher Myiarchus panamensis
- Ash-throated Flycatcher Myiarchus cinerascens Rare/Accidental
- Nutting's Flycatcher Myiarchus nuttingi
- Great Crested Flycatcher Myiarchus crinitus
- Brown-crested Flycatcher Myiarchus tyrannulus
- Great Kiskadee Pitangus sulphuratus
- Boat-billed Flycatcher Megarynchus pitangua
- Rusty-margined Flycatcher Myiozetetes cayanensis Rare/Accidental
- Social Flycatcher Myiozetetes similis
- Grey-capped Flycatcher Myiozetetes granadensis
- White-ringed Flycatcher Conopias albovittata
- Golden-bellied Flycatcher Myiodynastes hemichrysus
- Streaked Flycatcher Myiodynastes maculatus
- Sulphur-bellied Flycatcher Myiodynastes luteiventris
- Piratic Flycatcher Legatus leucophaius
- Tropical Kingbird Tyrannus melancholicus
- Couch's Kingbird Tyrannus couchii
- Western Kingbird Tyrannus verticalis
- Eastern Kingbird Tyrannus tyrannus
- Gray Kingbird Tyrannus dominicensis Rare/Accidental
- Scissor-tailed Flycatcher Tyrannus forficatus
- Fork-tailed Flycatcher Tyrannus savana
Read more about this topic: List Of Birds Of Costa Rica