Niandra LaDes and Usually Just a T-Shirt is the debut album by the American musician John Frusciante, released on November 22, 1994, by American Recordings.

Frusciante was previously a member of the Red Hot Chili Peppers, but left in 1992 after he became overwhelmed by their newfound popularity. He became severely depressed, developed a serious drug addiction, and isolated himself in his home to record music.

Niandra LaDes and Usually Just a T-Shirt combines avant-garde and stream-of-consciousness styles, with guitar, piano and effects on a four-track recorder. It was met with confusion and a mixed response from fans and critics, and sold 15,000 copies by 1996. Two years later, Frusciante rehabilitated and rejoined the Red Hot Chili Peppers.