| SADUSKY | Prussia | 1800 | | | WI | |
| SALAMON | Galicia | 1750-1860 | Rzeszow | Hampshire | MA | 1888 |
| SALAMONOWICZ | Galicia | 1750-1860 | Rzeszow | Hampshire | MA | 1888 |
| SAVAGE | | 1870 | | | NE | |
| SAWICKI | | 1870 | | | NE | |
| SAWICZ | Lublin | 1779-1837 | Brody | | | |
| SCHAFRANSKE | | | | | MI | 1888 |
| SCHAFRANSKI | | | | | MI | 1888 |
| SCHALKE | | 1930 | | Cuyahoga | OH | 1890-1922 |
| SCHELKE | Bydgoszcz | 1865 | Thorn/Torun | | | |
| SCHELL | Bydgoszcz | 1932 | Torun | | | |
| SCHNIEDEROWSKI | Poland | 1861 | | Benton | MN | |
| SCHRODER | Wroclaw | 1800 | | | | |
| SCHROEDER | Wroclaw | 1800 | | | | |
| SEMKOFF/SEMKOW | Lvov | 1870 | | | OH | 1912 |
| SENDLAKOWSKI | Zwierzyniec | | | | | |
| SENF | | 1852 | | Wayne | MI | 1882-1956 |
| SETLIK | Krosno | 1920 | | | | |
| SEZECH | Kolbuszowa | 1800 | Rzeszow | | | |
| SHATAYLOR | Galicia | 1750-1860 | Rzeszow | | | |
| SHEMEK | Pilsno | 1877 | | | NE | |
| SHENOSKI | Tomza | 1852-1996 | Kisielnica | | | 1913 |
| SHENOSKY | Tomza | 1852-1996 | Kisielnica | | | 1913 |
| SHETELA | Galicia | 1750-1860 | Rzeszow | | | |
| SIEGMUND | Poland | | | Benton | MN | |
| SIEMEK | Pilsno | 1877 | | | NE | |
| SIENEK | Pilsno | 1877 | | | NE | |
| SIENIAWSKI | Tomza | 1852-1996 | Kisielnica | | | 1913 |
| SIENKO | Rzeszow | 1857 | | | | |
| SIERPIENSKW | Jaroslaw | | | | | |
| SIKORA | Galicia | 1750-1860 | Rzeszow | | | |
| SITEK | Galicia | 1880 | | | | |
| SIUBA | Rzeszow | 1800 | Tarnow | | | 1890 |
| SIUCHNINSKI | Bydgoszcz | | | | | |
| SKALSKI | | | | Cook | IL | 1907 |
| SKIBA | Tarnobrzeg | 1840 | Jezowe | | | |
| SKORUPA | Barglawa | | | | | |
| SKORZAK | | 1840 | Zamosc | | | |
| SKORZAKOWNA | | 1840 | Zamosc | | | |
| SKOWYRA | Kupenien | | | | MA | 1900 |
| SKURZAK | | 1840 | Zamosc | | | |
| SKURZENECKI | Suwalki | 1800 | | | | |
| SLECZKA | Rzeszow | 1800 | | | | |
| SMALEC | Rzeszow | 1800 | Gorlice | | | 1890 |
| SMATROWSKA | Lublin | 1779-1837 | Brody | | | |
| SMOLENSKI | Olsztyn | 1800 | Nidzica | | | |
| SMOTKOSKI | Poznan | 1830-1910 | Bydgoszcz | | | |
| SNIEGOCKA | Lodz | 1867 | Krosniewice | | | |
| SOBOLESKI | | 1868 | | | WI | 1943 |
| SOBOLEWSKI | | 1868 | | | WI | 1943 |
| SOBOTA | Tarnow | 1888-1907 | Brzesko | Cook | IL | 1907-1934 |
| SODA | | | | | WI | 1878 |
| SOLINSKI | Krosno | 1900 | | | | |
| SOLTYS | | | | | | |
| SORANA
(O) | | | | | MI | 1930 |
| SOSNOWSKI | Olsztyn | 1870 | Nidzica | | | |
| SPORNEY | Januszkowo | 1849 | | Benton | MN | |
| STARTZ | Galicia | 1750-1860 | Rzeszow | | | |
| STASIOWSKI | Rzeszow | 1800 | Rpoczyce | | | |
| STATKIEWICZ | | | | | | |
| STEC | Rzeszow | 1800 | Gorlice | | | |
| STEC | Galicia | 1750-1860 | Rzeszow | | | |
| STEFANCHIK | Slovakia | 1800-1996 | | Somerset | NJ | 1907-1996 |
| STEFANCIK | Slovakia | 1800-1996 | | Weschester | NY | 1905-1996 |
| STEFANCSIK | Slovakia | 1800-1996 | | Somerset | NJ | 1907-1996 |
| STEFANOWICZ | Poznan | <
1883 | | | | |
| STEFANOWICZ | Poznan | <
1883 | | | | |
| STEFANSKI | Tarnow | 1775-1831 | Brzeska | | | |
| STEMPINSKI | Plock | 1814-1886 | | Cook | IL | 1910 |
| STENZEWSKI | Rzeszow | 1800-1890 | Stryzow | Cook | IL | 1890-1936 |
| STENZOSKI | Rzeszow | 1800-1890 | Stryzow | Cook | IL | 1890-1936 |
| STENZOWSKI | Rzeszow | 1800-1890 | Stryzow | Cook | IL | 1890-1936 |
| STOCKA | | <
1900 | Suszno | | | |
| STOPJAK | Orava | 1875 | | Chester | PA | 1899 |
| SUBCSZYSKA | Smiordaw | 1841 | Krajenka | Cook | IL | 1891 |
| SUDYKA | Galicia | 1750-1860 | Rzeszow | | | |
| SULEWSKA | Germany | 1854 | | | | |
| SUROWIEC | Poland | 1850 | | | | |
| SURRY | | 1900 | | Cook | IL | 1907 |
| SWIATKIEWICZ | Poznan | | | | | |
| SWIDER | Tarnow | 1874-1900 | Lisia
Gora | | | 1900-1939 |
| SYNOWIEC | Lublin | 1700 | | | | |
| SYSDEK | Rzeszow | 1870-1996 | Jaslo | Robertson | TX | 1870-1996 |
| SYZDECK | Rzeszow | 1870-1996 | Jaslo | Robertson | TX | 1870-1996 |
| SYZDEK | Rzeszow | 1870-1996 | Jaslo | Robertson | TX | 1870-1996 |
| SYZDEK | Rzeszow | 1870-1996 | Jaslo | | | 1870-1996 |
| SYZDEK | Rzeszow | 1870-1996 | Jaslo | | | 1870-1996 |
| SYZDEK | Rzeszow | 1870-1996 | Jaslo | | | 1870-1996 |
| SZAWICA | | 1870 | | | NE | |
| SZEGEDI | Slovakia | 1850 | | | | |
| SZEGEDI | Slovakia | 1750-1850 | | | | |
| SZEGEDI | Slovakia | 1850 | | | | |
| SZELIGA | Prussia | 1800 | | | WI | |
| SZETELA | Galicia | 1750-1860 | Rzeszow | | | |
| SZEWCZYK | Poland | 1767 | | | | |
| SZEWCZYK | Tarnow | 1784-1837 | Brzesko | | | |
| SZEWCZYKOWA | Tarnow | 1793 | | | | |
| SZFRANSKI | | | | | MI | 1888 |
| SZKOLUT | Galicia | 1750-1860 | Rzeszow | | | |
| SZMETTER | | 1800 | | | WI | |
| SZTOPIAK | Orava | 1875 | | Chester | PA | 1899 |
| SZUBA | Rzeszow | 1800 | Tarnow | | | 1890 |
| SZUFLAT | | 1913 | | | | |
| SZUKALA | Galicia | 1895 | | | MI | |
| SZYKOWNY | Konin | 1870 | Gniezno | Allegheny | PA | 1890 |
| SZYMANSKI | Warszawskie | 1830 | | | | |
| SZYMANSKI | Plock | 1891-1893 | | Cook | IL | 1913 |
| SZYMEK | Pilsno | 1877 | | | NE | |
| SZYPULEWSKI | | | | | CT | |
|