Thibaud V "The Good", Count Of Blois & Champagne
- Born: 1148, Blois, France
- Marriage: Princess Alix Capet of France between 1164 and 1174
- Died: 1191, Siege of Acre at age 43
- Buried: Pontigny Abbey, Pontigny, Yonne, France
Theobald V of Blois (d. 1191), also known as Theobald the Good (French: Thibaut le Bon), was Count of Blois from 1151 to 1191. He was son of Theobald II of Champagne and Matilda of Carinthia. Although he was the second son, Theobald inherited Blois (including Chartres), while his elder brother, Henry got the more important county of Champagne.
He first married Sybil of Chateaurenault, which made him lord of Chateaurenault. Next he married Alix of France, daughter of Louis VII of France and his first wife Eleanor of Aquitaine. They had seven children:
1. Theobald, d. young
2. Philip, d. young
3. Henry, d. young
4. Louis I of Blois (d. 1205)
5. Alix, Abbess of Fontevrault
6. Margaret, married Walter of Avesnes, later Countess of Blois
7. Isabelle (or Elizabeth) (d. 1248), to whom her nephew Theobald VI of Blois left the County of Chartres (alienated from Blois) and the lordship of Chateaurenault.
Theobald lived primarily in Chartres and had its city walls renovated. After joining his brother Henry and a number of other nobles in opposing the young king Philip II, he reconciled with the king and supported him on the Third Crusade. He arrived in the summer of 1190 in the Holy Land and died in 1191 during the Siege of Acre.
Thibaud married Princess Alix Capet of France, daughter of King Louis VII 'the Younger' Capet of France and Eleanor Of Aquitaine, between 1164 and 1174. (Princess Alix Capet of France was born in 1150 in France and died in 1195.)