is a novel by George Du Maurier (grandfather of Daphne Du Maurier). It was written in 1894, and is about the title character who was hypnotized by the sinister Svengali to become a famous singer, although she (Trilby) was tone-deaf.
The novel is the Trope Namer
for The Svengali
. The 1895 stage adaptation popularized the Trilby hat.