| Never offer to teach fish to swim |
| Never put off till tomorrow what you can do (can be done) today |
| Never quit certainty for hope |
| Never too much of a good thing |
| Never try to prove what nobody doubts |
| Never write what you dare not sign |
| New brooms sweep clean |
| New lords, new laws |
| Nightingales will not sing in a cage |
| No flying from fate |
| No garden without its weeds |
| No great loss without some small gain |
| No herb will cure love |
| No joy without alloy |
| No living man all things can |
| No longer pipe, no longer dance |
| No man is wise at all times |
| No man loves his fetters, be they made of gold |
| No news (is) good news |
| No pains, no gains |
| No song, no supper |
| No sweet without (some) sweat |
| No wisdom like silence |
| None but the brave deserve the fair |
| None so blind as those who won't see |
| None so deaf as those that won't hear |
| Nothing comes out of the sack but what was in it |
| Nothing is impossible to a willing heart |
| Nothing must be done hastily but killing of fleas |
| Nothing so bad, as not to be good for something |
| Nothing succeeds like success |
| Nothing venture, nothing have |
| Oaks may fall when reeds stand the storm |
| Of two evils choose the least |
| Old birds are not caught with chaff |
| Old friends and old wine are best |
| On Shank's mare |
| Once bitten, twice shy |
| Once is no rule (custom) |
| One beats the bush, and another catches the bird |
