Paris - Île-de-France
- Therwath
- Theulier
- Theuriot
- Thevarajah
- Theveneau
- Thevenin-lemoine
- Theves
- Thevin
- Thiagarajah
- Thiant
- Thiard
- Thiaville
- Thibeault
- Thibier
- Thibord
- Thiboult
- Thiboust
- Thiebaux
- Thiefine
- Thiehi
- Thiellement
- Thiellet
- Thienard
- Thienpont
- Thierart
- Thieux
- Thimognier
- Thimonnier
- Thingaud
- Thinon
- Thioly
- Thiou
- Thiounn
- Thioux
- Thirault
- Thirouard
- Thiroux
- This
- Thisy
- Thivel
- Thivet
- Thivolet
- Thiébault
- Thobie
- Thoby
- Thollet
- Thomassen
- Thomin
- Thomis
- Thoren
- Thorner
- Thornhill
- Thornton
- Thos
- Thouault
- Thoumine
- Thoumyre
- Thourel
- Thourot
- Thouvenel
- Thouverez
- Threillard
- Thuaire
- Thual
- Thuau
- Thuillez
- Thuilliez
- Thuillot
- Thuilot
- Thuleau
- Thurairajah
- Thuraisingam
- Thuries
- Thy
- Thybaud
- Thys
- Thébault
- Théophile
- Thérond
- Tiago
- Tiaiba
- Tibaoui
- Tiboul
- Tieng
- Tieo
- Tiet
- Tiev
- Tiffon
- Tighidet
- Tighilt
- Tignol
- Tigreat
- Tigrine
- Tihy
- Tikhonov
- Tilikete
- Till
- Tillette de Clermont
- Tilmant
- Tim

