Pau 64000 - Aquitaine
- Sepanayagam
- Serfass
- Sergent
- Serie
- Serralbo
- Servat
- Sevet
- Sevilla
- Sevillano
- Seznec
- Sghir
- Shanmuganandarajah
- Shikhani
- Siaffa
- Siari
- Siberchicot
- Sicabaig
- Sigargok
- Signour
- Simeon
- Simonet
- Simonetti
- Simonnet
- Simonyan
- Sin
- Sinan
- Singh
- Sinuvong
- Siot
- Sipolis
- Sirey
- Sivert
- Sivet
- Six
- Slaoui
- Slimani
- Soares
- Societe
- Sola
- Solal
- Sole
- Sombrun
- Somdecoste-lespoune
- Somps
- Sorin
- Soteras
- Soubacq
- Soubies
- Souche
- Soula
- Soulan
- Soulas
- Soulet
- Soulie
- Sourbie
- Souris
- Soutric
- Souverbie
- Spinat
- Spinelli
- Stehelyn
- Stourki
- Straebler
- Strainchamps
- Strazzera
- Subervie
- Sudry
- Sulpie
- Sun
- Surget
- Sutra
- Sylvester
- Sylvestre
- Sébastian
- Tachot
- Tahiri
- Tailliez
- Tailpied
- Tallet
- Tallon
- Talou
- Tamer
- Tanquereuil
- Taoubi
- Tapia
- Tapon
- Tarbis
- Tardan
- Tardio
- Tarissan
- Tarlevé
- Tarnowski
- Tarrou
- Taskin
- Tassin
- Taupin
- Tauziet
- Techer
- Teillard
- Tello