Princess Wensicia is a fictional character and member of House Corrino from the Dune universe created by Frank Herbert. She appears in Herbert's 1976 novel Children of Dune  — the first hardcover best-seller ever in the science fiction field  — and later in the 2008 interquel Paul of Dune by Brian Herbert and Kevin J. Anderson.

As established in the appendix of Dune' (1965), Wensicia is the third daughter of the 81st Padishah Emperor Shaddam Corrino IV and Anirul, a Bene Gesserit of Hidden Rank. Her oldest sister is the Princess Irulan; her three other siblings are sisters Chalice, Josifa and Rugi. Wensicia accompanies her father into exile on Salusa Secundus after he is deposed by Paul Atreides in Dune.

In Children of Dune, Wensicia is described as "fair-haired" with a "heart-shaped face," and said to have learned "shifty trickiness" from her sister Irulan but not herself been trained by the Bene Gesserit. She notes, "Irulan once divulged to me some of the things she'd learned. She was showing off at the time, and I saw no demonstrations. Still the evidence is pretty conclusive that Bene Gesserits have their ways of achieving their ends." Shaddam IV's heir is Wensicia's son Farad'n Corrino, whose deceased father, Dalak, is noted to be related to Count Hasimir Fenring, a close friend of Shaddam's since childhood.