Polioptila is a genus of small insectivorous birds in the family Polioptilidae. They are found in North and South America.

The genus Polioptila was introduced by the English zoologist Philip Sclater in 1855. Although he listed several members, he did not specify a type species. This was designated by the American ornithologist Spencer Baird in 1864 as Montacilla caerulea, Linnaeus, now the blue-grey gnatcatcher, Polioptila caerulea. The name of the genus combines the Ancient Greek words πολιος polios "grey" and πτιλον ptilon "plumage".

The genus contains 18 species:

• Rio Negro gnatcatcher, Polioptila facilis – split from P. guianensis
• Guianan gnatcatcher, Polioptila guianensis
• Slate-throated gnatcatcher, Polioptila schistaceigula
• Para gnatcatcher, Polioptila paraensis – split from P. guianensis
• Iquitos gnatcatcher, Polioptila clementsi – described in 2005
• Inambari gnatcatcher, Polioptila attenboroughi – described in 2013
• Marañón gnatcatcher, Polioptila maior – split from P. plumbea
• Tropical gnatcatcher, Polioptila plumbea
• Creamy-bellied gnatcatcher, Polioptila lactea
• Masked gnatcatcher, Polioptila dumicola
• Cuban gnatcatcher, Polioptila lembeyei
• Yucatan gnatcatcher, Polioptila albiventris
• White-browed gnatcatcher, Polioptila bilineata – split from P. plumbea
• Blue-grey gnatcatcher, Polioptila caerulea
• Black-tailed gnatcatcher, Polioptila melanura
• California gnatcatcher, Polioptila californica
• Black-capped gnatcatcher, Polioptila nigriceps
• White-lored gnatcatcher, Polioptila albiloris

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