| Saying and doing are two things |
| Score twice before you cut once |
| Scornful dogs will eat dirty puddings |
| Scratch my back and I'll scratch yours |
| Self done is soon done |
| Self done is well done |
| Self is a bad counsellor |
| Self-praise is no recommendation |
| Set a beggar on horseback and he'll ride to the devil |
| Set a thief to catch a thief |
| Shallow streams make most din |
| Short debts (accounts) make long friends |
| Silence gives consent |
| Since Adam was a boy |
| Sink or swim! |
| Six of one and half a dozen of the other |
| Slow and steady wins the race |
| Slow but sure |
| Small rain lays great dust |
| So many countries, so many customs |
| So many men, so many minds |
| Soft fire makes sweet malt |
| Something is rotten in the state of Denmark |
| Soon learnt, soon forgotten |
| Soon ripe, soon rotten |
| Speak (talk) of the devil and he will appear (is sure to appear) |
| Speech is silver but silence is gold |
| Standers-by see more than gamesters |
| Still waters run deep |
| Stolen pleasures are sweetest |
| Stretch your arm no further than your sleeve will reach |
| Stretch your legs according to the coverlet |
| Strike while the iron is hot |
| Stuff today and starve tomorrow |
| Success is never blamed |
| Such carpenters, such chips |
| Sweep before your own door |
| Take care of the pence and the pounds will take care of themselves |
| Take us as you find us |
| Tarred with the same brush |
