Selected Mottoes (with Translations): "K" Surnames
| Family Name | Original Language (Usually Latin or Old French) | English Translation (if needed) |
| Kane | Inclytus virtute | Renowned for virtue |
| Kavanagh | Siothchain agus fairsinge | Peace and plenty |
| Keane | Felis demulcta mitis | The stroked cat is meek |
| Kearney | Sustine et abstine | Sustain and abstain |
| Kearns | Fidens et constans | Stand firm on trust |
| Keating | Providentia divina | By devine providence |
| O'Keeffe | Forti et fideli nihil difficle | To the brave and faithful man nothing is difficult |
| Keegan | Pro patria | For my country |
| Kelleher | Feret ad astra virtus | Virtue will bear us to the sky |
| Kellett | Feret ad astra virtus | Virtue will bear us to the sky |
| (O')Kelly | Turris fortis mihi deus | God is a tower of strength to me |
| Kenneally | Vir super hostem | A man above an enemy |
| Kennedy | Lamh laidir in uactar | The strong hand uppermost |
| Kenny | Teneat luceat floreat | May it hold an shine |
| Kent | Virtutes et honor | Honour and virtue |
| Keogh | Resitite usque ad sanguinem | Resist even to death |
| Kerr | Deus solamen | God is my comfort |
| Keys | In Deo sola spec mea | My hope in God alone |
| Kidd | Donec impleat orbem | Until it fill its orb |
| Kiely | Virtute et valore | By virtue and valour |
| Kiernan | Virtutes parvae crescunt | Small things increase by virtue |
| Killeen | Festina lente | Be quick without impetuosity |
| Kinahan | Deo fidens persistas | Trusting in God perserve |
| King | Audaces fortuna juvat | Fortune favors the brave |
| Kingston | Dei gratia | By the grace of God |
| Kirby | Seasam go teann, go daingean | To stand firm |
| Kirkpatrick | -- | I make sicker |
| Kirwan | J'aime mon Dieu, mon Roi, mon patrie | I love my God, my King, my country |
| Knight | Virtus sibi aureum | Virtue is worth gold to itself |
| Knox | Moveo et proficior | I proceed and am more prosperous |
| Kyle | Tibi soli | To thee alone |
| Kavanagh | Mea gloria fides | Faith is my glory |
| Kavanagh | Virtus sola nobilitat | Virtue alone ennobles |
| Kay | In Deo sola spec mea | My hope in God alone |
| Kean | Inclytus virtute | Renowned for virtue |
| Keane | Virtute | By virtue |
| O'Kearin | Fidens et constans | Stand firm on trust |
| Kearney | Semper fidelis | Always faithful |
| Keir | -- | Touch not the cat bota (without) a glove |
| Keith | -- | Remember thy end |
| Keith | -- | Watch the temptation |
| Ken(d)rick | -- | Virtue is honour |
| Kennedy | Fuimus | We have been (We have made our mark) |
| Kennion | Ventis secundis | By favourable winds |
| Keppel | Ne cede malis | Yield not to adversity |
| Ker | -- | Forward |
| Ker | Sero sed serio | Late but in earnest |
| Ker | Tout droit | Always right |
| Keralake | Ad finem fidelis | Faithful to the end |
| Kerrick | Nunquam non paratus | Never unprepared |
| Key | In Domino confido | In God we trust |
| Kidd | Nil admirari | Not to admire |
| Kimber | Frangas non flectes | You may break, but shall not bend me |
| Kincaid | -- | I will defend |
| Kineaid | -- | I'll defend |
| King | Audaces fortuna juvat | Fortune favours the bold |
| Kingsmill | -- | Do well, doubt not |
| Kinloch | -- | Yet higher |
| Kinnear | -- | I llive in hope |
| Kirby | -- | Firm |
| Kirkman | In Deo confido | I trust in God |
| Kirkpatrick | -- | I make sure |
| Kirkwood | Spec mea in Deo | God is my hope |
| Kirwan | Mon Dieu, mon Roi, et ma patrie | My God, my King, and my country |
| Knight | Virtute et labore | By valour and exertion |
| Knoliys | In utrumque paratus | Prepared for both |
| Knowles | Semper paratus | Always prepared |
| Knyfton | In Domino confido | In God we trust |
| Kyd | Donec impleat orbem | Until it fill its orb |
| Kyrle | Nil moror ictus | I do not care for blows |
| Sources: Fairbairn's Book of Crests of the Families of Great Britain and Ireland (1993, Baltimore: Genealogical Publishing Co, Inc.) and The General Armory of England, Scotland, Ireland, and Wales by Sir Bernard Burke (1996, Heritage Books: Bowie MD) | ||
