Willem (or Guilliam) Ogier (1618–1689) was a Flemish schoolmaster, playwright and comedian.

He wrote comedic moralities for performance by the chambers of rhetoric (civic poetry and drama societies) the Violieren and the Olijftak.

First performances were often on the Feast of St. Luke (18 October), as the rhetoricians had a close association with the Guild of Saint Luke (the guild of painters, illuminators, printmakers and booksellers).

When the Olyftack and Violieren merged in 1660 Ogier took a leading role as "Factor" of the reinstituted chamber.

A critical edition of his plays was edited by Willem van Eeghem and A.A. Keersmaekers and published in three volumes as Willem Ogier: De tooneelwerken (Antwerp and Amsterdam, 1921–1955).