- Sabie
- Sabol
- Sachleben
- Sackfield
- Sacks
- Sacra
- Sadler
- Saffer
- Saffran
- Safina
- Saha
- Sahoo
- Salaka
- Saldivar
- Salem
- Sales
- Saling
- Salings
- Sallade
- Sallee
- Salman
- Salmon
- Salome
- Salsman
- Saltsman
- Salvagne
- Salvo
- Salyer
- Sammons
- Sampey
- Sample
- Samples
- Sampson
- Samson
- Samuels
- Sandbach
- Sandercock
- Sanderfoot
- Sanders
- Sandidge
- Sandler
- Sandlin
- Sandmann
- Sandoval
- Sands
- Sandy
- Sanford
- Sangalli
- Sangiuliano
- Sans
- Sansbury
- Santella
- Santoro
- Santos
- Sapp
- Sappenfield
- Sargent
- Sarkis
- Sarver
- Sasse
- Sastre
- Satfford
- Satori
- Satterly
- Sattich
- Sauer
- Saufnauer
- Saunders
- Sauter
- Savage
- Savarise
- Sawyer
- Sawyers
- Saxton
- Saylor
- Scalf
- Scalise
- Scanlan
- Scanlon
- Scantland
- Scarbrough
- Scarlott
- Scarry
- Schaaf
- Schaber
- Schade
- Schadt
- Schaefer
- Schafer
- Schaffer
- Schaftlein
- Schagene
- Schager
- Schank
- Schaub
- Scheck
- Scheer
- Scheetz
- Scheibel
- Scheid
- Scheldorf
- Scheler
- Schell
- Schenk
- Schenkein
- Schepers
- Scherdin
- Scherzer
- Scheu
- Scheurich
- Schevetto
- Schick
- Schiemann
- Schiess
- Schiesser
- Schifferdecker
- Schildt
- Schillizzi
- Schindler
- Schissler
- Schlich
- Schlicher
- Schlierf
- Schlindwein
- Schmalfeld
- Schmalz
- Schmeing
- Schmetzer
- Schmidt
- Schmitt
- Schmitz
- Schmoyer
- Schmuckie
- Schnarr
- Schneid
- Schneider
- Schneiter
- Schnell
- Schnellenberger
- Schneringer
- Schnurr
- Schoenbachler
- Schoenbaechler
- Schoening
- Schofer
- Scholl
- Scholz
- Schonberger
- Schonburg
- Schoo
- Schook
- Schoolcraft
- Schorch
- Schork
- Schorr
- Schott
- Schrader
- Schram
- Schreck
- Schreiber
- Schrembs
- Schrenger
- Schroader
- Schroder
- Schrodt
- Schroeder
- Schroll
- Schuble
- Schuck
- Schuckman
- Schueler
- Schuermeyer
- Schuette
- Schuhman
- Schuhmann
- Schuler
- Schulman
- Schulmeister
- Schulte
- Schulten
- Schultz
- Schulz
- Schum
- Schumacher
- Schuman
- Schuppert
- Schur
- Schuster
- Schutz
- Schwab
- Schwager
- Schwandt
- Schwartz
- Schwarz
- Schweda
- Schweickhardt
- Schweinhart
- Schweitzer
- Schweizer
- Schwendau
- Schwenker
- Schweri
- Schwietz
- Schwindel
- Sciarra
- Scifers
- Scobee
- Scoggins
- Scott
- Scovil
- Screws
- Scribner
- Scroggy
- Scrogham
- Scruggs
- Scully
- Sea
- Seabold
- Seadler
- Seale
- Seales
- Seals
- Searcy
- Searfoss
- Sears
- Seawright
- Seay
- Sechrist
- Secor
- Sedelmeier
- Sedoris
- See
- Seebert
- Seekamp
- Seewer
- Seger
- Sego
- Sehic
- Sehlinger
- Seibel
- Seibert
- Seidl
- Seifert
- Seiffertt
- Seigle-Dewitt
- Seiler
- Seitz
- Selby
- Self
- Selig
- Seller
- Sellers
- Selvage
- Selvaraj
- Semar
- Semones
- Semple
- Seng
- Sengupta
- Senler
- Senn
- Senninger
- Sensenbrenner
- Serdenis
- Sermersheim
- Sermershiem
- Serotte
- Settle
- Settles
- Seubold
- Severance
- Severs
- Seward
- Sewell
- Sexton
- Seykora
- Seymour
- Seymoure
- Shackelford
- Shackleton
- Shacklette
- Shadburne
- Shade
- Shader
- Shadle
- Shaffer
- Shaheen
- Shaikun
- Shain
- Shake
- Shanklin
- Shanks
- Shannon
- Shapero
- Shapira
- Sharp
- Sharpenstein
- Sharpnack
- Shartzer
- Shaughnessy
- Shaver
- Shavinsky
- Shaw
- Shea
- Shearer
- Shears
- Sheath
- Sheckells
- Sheehan
- Sheehy
- Sheeley
- Sheeran
- Sheffer
- Sheffield
- Shehan
- Shein
- Shelburne
- Shelby
- Shelden
- Sheldon
- Shellhaas
- Shelton
- Shely
- Shemwell
- Shepard
- Shepherd
- Sheppard
- Sheridan
- Sherman
- Sherrard
- Sherrell
- Sherrod
- Shibley
- Shields
- Shifrin
- Shina
- Shindlebower
- Shinkle
- Shinton
- Shipman
- Shipp
- Shircliff
- Shirley
- Shively
- Shmuckie
- Shobe
- Shockley
- Shoemaker
- Shoopman
- Short
- Shortt
- Shoulders
- Shouse
- Showalter
- Shrader
- Shrode
- Shuck
- Shue
- Shulhafer
- Shull
- Shulthise
- Shultz
- Shumake
- Shumaker
- Shumate
- Shunnarah
- Shupe
- Shuttleworth
- Shutts
- Sibler
- Sickles
- Sidebottom
- Siefert
- Siefring
- Siegel
- Siemens
- Siers
- Sievers
- Sievert
- Sieving
- Sievwright
- Sikes
- Silcox
- Silletto
- Silliman
- Silvano
- Silveria
- Similey
- Simmons
- Simms
- Simon
- Simons
- Simple
- Simpson
- Sims
- Sinclair
- Singer
- Singleton
- Sink
- Sinkhorn
- Sinowitz
- Sipes
- Sirles
- Sisco
- Sistrunk
- Sites
- Sivori
- Sizemore
- Skaggs
- Skarbek
- Skees
- Skeeters
- Skelley
- Skelton
- Skidmore
- Skiles
- Skinner
- Skipper
- Skipworth
- Skolnick
- Skrine
- Skuller
- Slaton
- Slaughter
- Slaven
- Slawinski
- Slayton
- Sleadd
- Slemmons
- Slider
- Sloan
- Sloane
- Slone
- Slucher
- Slusher
- Slye
- Small
- Smallwood
- Smart
- Smiley
- Smith
- Smith-Banks
- Smitha
- Smithers
- Smothers
- Smythe
- Snapp
- Snawder
- Snead
- Sneed
- Snell
- Snellen
- Sneve
- Snider
- Snipp
- Snoddy
- Snodgrass
- Snow
- Snowden
- Snyder
- Socha
- Soeder
- Soergel
- Sokol
- Solley
- Solzman
- Sommersell
- Song
- Sonnheim
- Soren
- Sorge
- Sorrells
- Sotsky
- Soundergeld
- South
- Southard
- Southworth
- Sowders
- Sowell
- Sowers
- Spaeth
- Spain
- Spalding
- Spalt
- Spangler
- Spann
- Sparks
- Sparling
- Sparrow
- Spath
- Spaugh
- Spaulding
- Speaker
- Spear
- Spears
- Speece
- Speedy
- Speelman
- Speer
- Speevack
- Speier
- Speigel
- Spellman
- Spence
- Spencer
- Spetz
- Spicer
- Spiers
- Spiller
- Spillman
- Spilly
- Spine
- Spink
- Spinosa
- Spitz
- Spivey
- Spoelker
- Sponsler
- Spradlin
- Spratt
- Sprauer
- Sprowles
- Sprowls
- Spruill
- Spurgeon
- Spurling
- Squire
- Squires
- St Clair
- Stacey
- Stack
- Staebler
- Staehle
- Stafford
- Staggs
- Stahlgren
- Stains
- Stalcup
- Staley
- Stalker
- Stallard
- Stallcup
- Stallings
- Staloff
- Stambaugh
- Stamp
- Standiford
- Stanfield
- Stanfill
- Stanley
- Stansbury
- Stanton
- Staples
- Stapleton
- Starcher
- Stark
- Starkey
- Starks
- Starr
- Starrett
- Stasel
- Staten
- Stauble
- Staudenheimer
- Stauffer
- Stclair
- Stead
- Stearman
- Steckler
- Steele
- Steenbergen
- Steer
- Steffan
- Steffen
- Stegall
- Stegner
- Steiden
- Steier
- Steilberg
- Stein
- Steinberg
- Steinbock
- Steineker
- Steinel
- Steinemann
- Steiner
- Steinmetz
- Steinrock
- Steitz
- Steltenpohl
- Stelton
- Stengel
- Stenger
- Stenicka
- Stephan
- Stephens
- Stephenson
- Stepp
- Stepteau
- Stern
- Sternberg
- Stetson
- Stettenbenz
- Steuerle
- Stevens
- Stevenson
- Steverson
- Steward
- Stewart
- Stibbins
- Stice
- Stich
- Stickel
- Stiebling
- Stier
- Stiff
- Stigall
- Stikes
- Stiles
- Stilger
- Still
- Stilz
- Stine
- Stinebruner
- Stiner
- Stines
- Stinnett
- Stinson
- Stirneman
- Stites
- Stith
- Stivers
- Stobaugh
- Stober
- Stocker
- Stocking
- Stockland
- Stoddard
- Stofel
- Stoffer
- Stoffera
- Stoflet
- Stoke
- Stokell
- Stokes
- Stomberger
- Stone
- Stonestreet
- Stonska
- Stopher
- Storm
- Storment
- Storms
- Stortz
- Story
- Stottman
- Stottmann
- Stotts
- Stout
- Stovall
- Stover
- Stowers
- Strange
- Stratman
- Stratton
- Straub
- Strausburg
- Strauss
- Streble
- Stribling
- Strickland
- Striegel
- Stringer
- Strocen
- Stromberg
- Strong
- Strother
- Strothman
- Stroud
- Stroxtile
- Strubel
- Struck
- Strunk
- Stuart
- Stubbins
- Stucker
- Stuecker
- Stuedle
- Stumph
- Sturdivant
- Sturgeon
- Sturgill
- Sturgis
- Sturtevant
- Sturtzel
- Stutz
- Stuyniski
- Sublett
- Suddath
- Suddeth
- Suell
- Sugg
- Suggs
- Sullivan
- Sult
- Sulzer
- Summers
- Summerville
- Sumner
- Sumpter
- Sunde
- Suponitskaya
- Surowski
- Susemichel
- Suter
- Sutherland
- Sutter
- Sutton
- Swain
- Swan
- Swann
- Swanson
- Swartz
- Swasko
- Swearingen
- Swears
- Sweazy
- Swedin
- Sweeney
- Sweet
- Swetnam
- Swift
- Swindler
- Swinney
- Swinny
- Switzer
- Swope
- Sword
- Syed
- Sykora
- Syversten
- Szappanos
- Szilagyi
- Szwczyk
- Szymansky