Paris - Île-de-France
- Therizols
- Therondel
- Therwath
- Theuret
- Theuriot
- Thevarajah
- Thevenin-lemoine
- Theves
- Thevin
- Thiagarajah
- Thiaville
- Thiaw
- Thibaut de Menonville
- Thibord
- Thiboult
- Thiboust
- Thiburce
- Thiebaux
- Thiebot
- Thiefine
- Thiehi
- Thiellement
- Thienpont
- Thierart
- Thieullet
- Thievenaz
- Thimognier
- Thimonnier
- Thingaud
- Thioly
- Thiot
- Thiou
- Thiounn
- Thioux
- Thirault
- Thirode
- Thirouard
- This
- Thisy
- Thivel
- Thivet
- Thivolet
- Thivolle
- Thiyagarajah
- Thiébault
- Thollet
- Thollon
- Thoma
- Thomin
- Thomine Desmazures
- Thomsen
- Thoren
- Thorner
- Thornhill
- Thornton
- Thos
- Thoumine
- Thoumyre
- Thourel
- Thourot
- Thouverez
- Thuaire
- Thual
- Thuau
- Thuillez
- Thuilliez
- Thuillot
- Thuilot
- Thuleau
- Thumerelle
- Thurairajah
- Thuraisingam
- Thurel
- Thuries
- Thy
- Thybaud
- Thyreau
- Thys
- Thyss
- Théodore
- Théophile
- Thérond
- Tiago
- Tiboul
- Tieng
- Tieo
- Tiet
- Tiev
- Tiffon
- Tighidet
- Tighilt
- Tighlit
- Tignol
- Tigreat
- Tigrine
- Tihy
- Tikhonov
- Tilikete
- Tillette de Clermont
- Tilmant
