
Boyko dialect (Ukrainian: Бойківський говір), also known as North Carpathian Dialect (Ukrainian: Північнокарпатський говір) is a dialect spoken by Boyko people who live in the Carpathian Mountains of Western Ukraine. It is usually classified among Southwestern dialects of the Ukrainian language.
The name of the dialect is derived from the colloquial expression бо-й-е (boye), which Boykos frequently use in the meaning "yes".
The Boyko dialectal area borders Upper Dniestrian dialect in the north, Hutsul dialect in the east, Transcarpathian dialect in the south and Lemko dialect in the west. The region where the dialect is common includes the towns of Bolekhiv and Nadvirna.
Elements of Boyko dialect are also present among speakers of an eastern variety of Lemko dialect residing in the area between Rzeszów and Krosno, known as Zamishantsi.
Among archaic terms present in Boyko dialect are words such as бýкарт [ˈbukɐrt] or пожали́ўник [poʒɐˈlɪu̯nɪk] - "bastard", "illegitimate child", вíблиц’а [ˈʋiblɪt͡sʲɐ] - "long pole", дереви́ш’ч’е [dereˈʋɪʃt͡ʃe] - "coffin", дот’áмл’у [dʊˈtʲɑmlʲʊ] - "(I) remember", жали́ва [ʒɐˈlɪʋɐ] - "nettle", змíткы [ˈzmʲitkɨ] - "old shoes", зáк’іл’ [ˈzakʲilʲ] - "yet", з’вір’ [zʲʋʲirʲ] - "ravine", лужáнка [lʊˈʒɑnkɐ] - "forest clearing", н’ай [nʲɑi̯] - "let", "let it be" (particle); пáртиц’а [ˈpartɪt͡sʲɐ] - "ribbon", потурайкьí [potʊrɐi̯ˈkɨ] - "currant", рубáт’а [rʊˈbɑtʲɐ] - "underwear", ýб’іч’ [ˈubʲit͡ʃʲ] - "mountain slope", ўтêрáник [wtɪˈrɑnɪk] - "towel", шáт’а [ˈʃɑtʲɐ] - "clothes", чêл’ад’ [ˈt͡ʃɪlʲɐdʲ] - "people", чêл’ади́на [t͡ʃɪlʲɐˈdɪnɐ] - "person", чêл’áн:ик [t͡ʃɪˈlʲanːɪk] - "man".
Elements of Boyko dialect are present in the works of Ukrainian writer Ivan Franko.