| Kia mate toa | |
| Kia toa | |
| Kloshe nanitch | |
| Labor omnia vincit | | Work overcomes all (L.) |  | RPC | |
| Loyally I serve |  | QLR | |
| Loyauté m'oblige | | Loyalty binds me (Fr.) |  | Loyals | |
| Manui dat cognitio vires | |
| Mente et manu | | With mind and hand (L.) |  | QRIH, 4 QOH | |
| Merebimur | |
| Montis insignia Calpe | In the sign of Mount Calpe (L.) Motto of Gibraltar, Calpe being its original name. The arms of Gibraltar (Castle and Key with motto) were awarded as a badge and battle honour to regiments for defence of the Rock during various sieges. See also Major Badge Motifs. |  | Suffolk, Northamptonshire, 58 Foot, Essex, HLI | |
| Mox surgere victor | | Soon to rise as victor (L.) |  | 81 Foot | |
| Ne obliviscaris | Do not forget (L.) Motto of the Dukes of Argyll |  | A&SH, 91 Highlanders | |
| Nec aspera terrent | | Not even hardships deter us (L.) |  | QOH, 3 King's Hussars, King's Regt, King's Regt (Liverpool), POWORY, West Yorkshire, RWF, Royal Inniskilling Fusiliers, 27th Foot |  | RRC | |
| Ne kah ne tah | |
| Nemo me impune lacessit | |
| Nemo nos impune lacessit | | Nobody assails us with impunity (L.) |  | RHF | |
| Nerth Mewn Undod | |
| Nil sine labore | |
| Nisi Dominus frustra | | Unless the Lord be with us all is in vain (L.) |  | KOSB | |
| Non nobis sed patriae | |
| Nulla vestigia retrorsum | |
| Nulli expugnabilis hosti | | Conquered by no enemy (L.) [motto sometimes appearing with Arms of Gibraltar] |  | R Gibraltar Rgt | |
| Nulli secundus | |
| Nunquam cede | |
| Nunquam retrorsum | |