•
Theodoric of Mont d'Hor (died 533), also known as Saint Thierry (or Theudric, Thierri) •
Theodoric of Freiberg (c. 1250–c. 1310), also known as Thierry, early Dominican •
Thierry of Chartres (died before 1155), French philosopher •
Theodoric I, Duke of Upper Lorraine (ruled 978–1027) •
Theodoric II, Duke of Lorraine (ruled 1070–1115) •
Theuderic II (587–613), king of Burgundy and Austrasia •
Thierry, Count of Flanders (c. 1099–1168), also known as Derrick or Thierry of Alsace •
Thierry Ambrose (born 1997), French footballer •
Thierry Ardisson (1949–2025), French television producer and host •
Thierry Baudet (born 1983), Dutch politician and author •
Thierry Boutsen (born 1957), Belgian Formula One race car driver •
Thierry Breton (born 1955),
European Commissioner for Internal Market, French businessman, former Minister of the Economy •
Thierry Brusseau, French track and field athlete •
Thierry Claveyrolat (1959–1999), French road bicycle racer •
Thierry Cornillet (born 1951), French politician •
Thierry Delubac (born 1963), French racing driver •
Thierry Dusautoir (born 1981), French rugby player •
Thierry Fischer (born 1957), Swiss conductor and flautist •
Thierry Gale (born 2002), Barbadian footballer •
Thierry Garnier, businessman, CEO of Kingfisher •
Thierry Guetta (born 1966), French street artist •
Thierry Gueorgiou (born 1979), French orienteer •
Thierry Henry (born 1977), French footballer •
Thierry Hermès (1801–1878), founder of fashion house Hermès •
Thierry Jacob (1965–2024), French professional boxer •
Thierry Jonquet (1954–2009), French writer •
Thierry Lamberton (born 1966), French speed skater •
Thierry Latty-Fairweather (born 2002), English footballer •
Thierry Lhermitte (born 1952), French actor •
Thierry Lincou (born 1976), French squash player •
Thierry Mariani (born 1958), French politician •
Thierry Maulnier (1909–1988), French journalist, essayist, dramatist and critic •
Thierry Mugler (1948–2022), French fashion designer •
Thierry Meyssan (born 1957), French journalist •
Thierry Morel, French art historian and curator •
Thierry Mutin, French singer •
Thierry Neuville (born 1988), Belgian rally driver •
Thierry Paulin (1963–1989), French serial killer •
Thierry Pastor, (born 1960) French singer •
Thierry Pelenga, Anti-balaka leader from Haute-Kotto prefecture in the Central African Republic and a war criminal •
Thierry Perez (born 1966), French politician •
Thierry Roussel (born 1953), fourth husband of Christina Onassis •
Thierry Ruinart (1657–1709), French Benedictine monk and scholar •
Thierry Sabine (1949–1986), French race driver, and founder and main organizer of the Dakar Rally •
Thierry St-Cyr (born 1977), Canadian politician •
Thierry Steimetz (1983–2026), French footballer •
Thierry Tesson (born 1957), French politician •
Thierry Vermeulen (born 2002), Dutch racing driver •
Thierry Warmoes (born 1964), Belgian politician •
Thierry Zéno (1950–2017), Belgian author and filmmaker •
Thierry Zéphir (born 19??), French author and curator ==People with the surname==