There are a total of 551 6-letter words starting with the letter 'k', and the number may vary in different dictionaries. You can specify the dictionary and order.

• killed ₁₃
• kidney ₁₄
• knight ₁₅
• kindly ₁₅
• kissed ₁₁
• keeper ₁₃
• killer ₁₂
• kaiser ₁₀
• kicked ₁₈
• knives ₁₅
• kernel ₁₂
• kinase ₁₁
• kettle ₁₁
• kisses ₁₀
• keenly ₁₄
• kitten ₁₁
• ketone ₁₁
• kelvin ₁₆
• kinder ₁₂
• kaolin ₁₂
• knocks ₁₈
• kidder ₁₂
• kennel ₁₃
• kosher ₁₂
• kemper ₁₄
• keener ₁₁
• kindle ₁₃
• keeler ₁₁
• kingly ₁₆
• keying ₁₅
• knotty ₁₃
• kidnap ₁₅
• karate ₁₀
• kirsch ₁₅
• knolls ₁₃
• kroner ₁₁
• kneels ₁₂
• kenner ₁₀
• keeled ₁₂
• kicker ₁₇
• kimono ₁₄
• knaves ₁₅
• knower ₁₄
• keypad ₁₆
• kultur ₁₃
• kiosks ₁₄
• krantz ₂₀
• kabuki ₁₈
• kikuyu ₁₈
• karmic ₁₆
• kiddie ₁₂
• kosmos ₁₂
• kaffir ₁₆
• kitsch ₁₅
• kersey ₁₂
• kissel ₁₁
• kayaks ₁₆
• knobby ₁₉
• kittel ₁₁
• kronor ₁₁
• keyway ₁₇
• kilter ₁₁
• kinked ₁₆
• kittle ₁₁
• kainit ₁₁
• kulaks ₁₆
• knicks ₁₈
• khakis ₁₆
• kalmia ₁₄
• kismet ₁₃
• kanban ₁₅
• kanaka ₁₅
• kidded ₁₃
• kaizen ₂₀
• kairos ₁₀
• keloid ₁₂
• knifed ₁₅
• kelson ₁₂
• kamala ₁₄
• kimchi ₁₈
• kronen ₁₂
• ketene ₁₁
• kennet ₁₀
• krater ₁₀
• kurgan ₁₄
• kipper ₁₆
• kinins ₁₂
• kebabs ₁₆
• kiting ₁₃
• knacks ₁₈
• kibble ₁₇
• klaxon ₁₉
• kummel ₁₈
• kopeks ₁₇
• kisser ₁₀
• kangas ₁₃
• khalif ₁₆
• karroo ₁₀
• kochia ₁₅
• kirtle ₁₁
• kainic ₁₄
• kafirs ₁₃
• kabaka ₁₇
• kahuna ₁₄
• kabobs ₁₆
• kappas ₁₆
• kiddle ₁₃
• krauts ₁₁
• knowns ₁₅
• kraken ₁₅
• kowtow ₁₆
• katana ₁₁
• knowes ₁₃
• kumari ₁₂
• kraals ₁₁
• kermes ₁₃
• kewpie ₁₆
• keyers ₁₂
• kaftan ₁₄
• koalas ₁₁
• kilted ₁₂
• kenned ₁₃
• kelpie ₁₄
• kwacha ₁₈
• kouros ₁₁
• kumara ₁₄
• kopeck ₂₀
• kyogen ₁₄
• koruna ₁₂
• kobold ₁₅
• kasher ₁₂
• kneads ₁₂
• karmas ₁₃
• kabala ₁₄
• kasbah ₁₅
• khapra ₁₅
• kharif ₁₅
• klicks ₁₈
• kwanza ₂₃
• kalpas ₁₄
• kuchen ₁₇
• khanum ₁₅
• keltie ₁₀
• karren ₁₁
• kegler ₁₃
• kibosh ₁₅
• kalian ₁₂
• knifes ₁₄
• karamu ₁₂
• karris ₁₀
• ketose ₁₀
• kaboom ₁₆
• kitted ₁₁
• kemple ₁₄
• kalium ₁₅
• kembla ₁₄
• keened ₁₂
• kinema ₁₄
• kumiss ₁₄
• keyset ₁₂
• kopjes ₂₂
• kippen ₁₇
• klatch ₁₆
• kirtan ₁₁
• knells ₁₃
• kronur ₁₂
• kamila ₁₂
• kentia ₁₁
• kantar ₁₁
• karter ₁₀
• kilims ₁₄
• kerria ₁₀
• karats ₁₀
• kinkle ₁₄
• kameez ₂₂
• koruny ₁₄
• kouroi ₁₁
• kathak ₁₇
• knurls ₁₃
• kimmer ₁₄

There are 551 6-letter words starting with the letter k in the well-known word game dictionary, in the Scrabble US (US/Canada/Thailand - TWL/NWL) dictionary, and in the Scrabble UK (International - SOWPODS/CSW) dictionary, and in the Words with Friends (WWF) dictionary.