Françoise Gilberte Périer (1 January 1620 – 25 April 1687) was a French biographer and the older sister of Blaise Pascal whose biography she wrote.

When Gilberte's mother died in 1626, her father moved the family to Paris and employed a governess, Louise Delfault, to bring up his children.

There, in June 1641, Gilberte married Florin Périer, a lawyer at the Supreme Tax Court in Clermont-Ferrand.

Her marriage produced four daughters (Marguerite Périer, born 1646, and Jacqueline (1644–1696), Marie (1647–1649), Louise (1651–1713)) and two sons (Blaise (1653–1684) and Étienne (1642–1680)).

[3][4] In 1646, like her husband, she had a religious conversion to Jansenism, a separatist movement in Roman Catholicism, and sent her children to Port-Royal Abbey, Paris to be educated.