1. Jack of all trades and master of none.什麼都會，樣樣不精。
2. Jack of all trades is of no trade.萬事皆通，一無所長。
3. Jadge not a book by its cover.人不可貌相。
4. Jest with an ass and he will flap you in the face with his tail.你跟驢子開玩笑，將被驢尾打耳光。
5. Joy and sorrow are next-door neighbours.是喜是憂難以分。
6. Joy often comes after sorrow, like morning after night.暮去必將朝至，苦盡常會甜來。
7. Joy put heart into a man.人逢喜事精神爽。
8. Joy shared with others are more enjoyed.與人同樂，其樂無窮。
9. Judge not according to the appearance.不要以貌取人。
10. Judge not of men and things at first sight.審人論事宜謹慎，一見之下莫斷定。
11. Justice has long arms.天網恢恢，疏而不漏。
1. Keep good men company, and you shall be of the number.近朱者赤。
2. Keep some till more come.更多的到手以前，要保持手裏的一點。
3. Keep thing seven years and you will find a use for it.備而不用。
4. Keep your breath to cool your porridge.少管閒事。
5. Keep your eyes wide open before marriage, and half shut afterwards.婚前張開眼，婚後半閉月。
6. Keep your mouth shut and your eyes open.要多看少說。
7. Keeping is harder than winning.創業不易，守業更難。
8. Kill the goose that laid the golden egg.殺雞取蛋
9. Kind hearts are more than coronets.善良的`心靈勝於顯貴的地位。
10. Kind words are the music of the world.善言是世上的音樂。
11. Kind words are worth much and cost little.口頭方便不費力。
12. Kind words butter no parsnips.畫餅充飢。
13. Kindness always begets kindness.善有善根。
14. Kindness is the golden chain by which society is bound together.善良是連結社會的金鍊。
15. Kindness is the language that the deaf can hear and the dumb understand.善良爲語言，聾子能天見啞巴懂心間。
16. Kindness is the sunshine of social life.仁慈是社會生活中的陽光。
17. Kindness will creep where it may not go.仁慈可進入任何禁地。
18. Kinsman helps kinsman, but woe to him that hath nothing.親幫親，鄰幫鄰，無親無助你倒黴。
19. Knavery may serve, but honestyis best.欺詐可能得計，但誠實總是上策。
20. Know something like the palm of one's hand.熟知其事，瞭如指掌。
21. Know something of everything and everything of something.既要有一般常識，又要有專業知識。
22. Know thyself.知道你自己。
23. Knowledge advances by steps not by leaps.知識的獲得是循序漸進而不是突飛猛進的。
24. Knowledge comes from experience alone.知識來自經驗。
25. Knowledge is a comfortable and necessary retreat and shelter for us in an advanced age; and if we do not plant it when young, it will give us no shade when we grow old.學識可使老年時舒適地退隱和有所寄託;但如果年青時不使它紮下根，老年就得不到它的庇護。
26. Knowledge is a treasure, but practice is the key to it.知識是一座寶庫，實踐是打開寶庫的鑰匙。
27. Knowledge is long, life is short.吾生有涯，而知無涯。
28. Knowledge is of two kinds, we know a subject ourselves, or we know where we can find information upon it.知識有兩種，一種是我們自己知道的東西，另一種是知道哪裏可以找到有關的資料。
29. Knowledge is power.知識就是力量。
30. Knowledge is the antidote to fear.知識可以解除恐懼。
31. Knowledge is the most precious treasure of all things, because it can never be given away, nor stolen nor consumed.知識是萬物中最珍貴的財寶，丟不掉，偷不走，也不會損耗。
32. Knowledge makes humble; ignorance makes proud.知識令人謙虛;無知使人驕傲。
33. Knowledge will not be aquired without pain and application.不花力氣，不下功夫是得不到知識的。
34. Knowledge without practice makes but half an artist.只有知識而無實踐，只能造就半瓢水的藝術家。