| Foundation for some roofing | 27 |
| Foundation for something | 24 |
| Foundation funders, sometimes | 29 |
| Foundation garment of yore | 26 |
| Foundation of broken stones | 27 |
| Foundation of some cultures | 27 |
| Foundation or preparation | 25 |
| Foundation stone abbr. | 22 |
| Foundation strengthener | 23 |
| Foundation, as of an argument | 29 |
| Foundation, frequently | 22 |
| Foundations for some pizzas | 27 |
| Foundations may support them | 28 |
| Foundations support them | 24 |
| Founded The Modern Lovers | 25 |
| Founded, on cornerstones | 24 |
| Founded, on town signs | 22 |
| Founder and queen of Carthage | 29 |
| Founder of a D.C. institute | 27 |
| Founder of a French dynasty | 27 |
| Founder of a musical dynasty | 28 |
| Founder of an Oahu plantation | 29 |
| Founder of antiseptic surgery | 29 |
| Founder of Bad Boy Records | 26 |
| Founder of British India | 24 |
| Founder of Christian Science | 28 |
| Founder of critical idealism | 28 |
| Founder of famed Academy | 24 |
| Founder of French opera | 23 |
| Founder of General Electric | 27 |
| Founder of Jesuit order | 23 |
| Founder of Kievan Russia | 24 |
| Founder of Little America | 25 |
| Founder of Lower Slobbovia | 26 |
| Founder of Lower Slobovia | 25 |
| Founder of Mesa Petroleum | 25 |
| Founder of microbiology | 23 |
| Founder of modern chemistry | 27 |
| Founder of modern China | 23 |
| Founder of modern Turkey | 24 |
| Founder of Motown Records | 25 |
| Founder of Ottoman dynasty | 26 |
| Founder of Persian Empire | 25 |
| Founder of Philadelphia | 23 |
| Founder of psychoanalysis | 25 |
| Founder of Reprise Records | 26 |
| Founder of Scholasticism | 24 |
| Founder of sumptuous hotels | 27 |
| Founder of Sunnybank Kennels | 28 |
| Founder of the Bolsheviks | 25 |
| Founder of the Chicago Bears | 28 |
| Founder of the Dutch Republic | 29 |
| Founder of The Factory | 22 |
| Founder of the Jesuits | 22 |
| Founder of the Mongol dynasty | 29 |
| Founder of the Motown label | 27 |
| Founder of the Oratory | 22 |
| Founder of the Ottoman Empire | 29 |
| Founder of the Persian Empire | 29 |
| Founder of the Russian empire | 29 |
| Founder of the Shakers | 22 |
| Founder of the Soviet Union | 27 |
| Founder of the Tudor dynasty | 28 |
| Founder of Thebes, in myth | 26 |
| Founder of Time and Life | 24 |
| Founder of U. of Virginia | 25 |
| Founding editor of the O.E.D. | 29 |
| Founding father Franklin | 24 |
| Founding Father, familiarly | 27 |
| Founding Fathers, e.g. | 22 |
| Founding member of NATO | 23 |
| Founding member of OPEC | 23 |
| Founding member of the Byrds | 28 |
| Founding New Yorker editor | 26 |
| Fountain basin feature | 22 |
| Fountain contents, often | 24 |
| Fountain in New Orleans | 23 |
| Fountain locale, often | 22 |
| Fountain of New Orleans | 23 |
| Fountain of Trevi coin | 22 |
| Fountain of Youth slogan? | 25 |
| Fountain offering, perhaps | 26 |
| Fountain pen's tip | 22 |
| Fountain pen, to François | 28 |
| Fountain setting, perhaps | 25 |
| Fountain treat, for short | 25 |
| Fountain treats for bigwigs? | 28 |
| Fountains, in heraldry | 22 |
| Four ''fish'' | 29 |
| Four "water" enders | 29 |
| Four and a score or more | 24 |
| Four balls to a Torontonian | 27 |
| Four beats in 4/4 time | 22 |
| Four bells, aboard ship | 23 |
| Four commands to a dog | 22 |
| Four Corners-area Indian | 24 |
| Four Corners-area Indians | 25 |
| Four Corners-area tribe | 23 |
| Four H.R.E. sovereigns | 22 |
| Four Holy Roman emperors | 24 |