STI West Negros University, also referred to by its acronym STI WNU or colloquially as West Neg, is a private university located in Bacolod, Negros Occidental, Philippines established in 1948.

The university is accredited by the Philippine Association of Colleges and Universities - Commission On Accreditation (PACUCOA) as a level II school and awards degrees in associate, bachelor, master, and doctorate levels through its Colleges and School of Graduate Studies. It also offers complete basic education (pre-school, elementary & junior high school) through its School of Basic Education, formerly Integrated School (IS). Senior high school is being offered in the institution as well.

STI West Negros University has an enrollment of about 10,000 students per semester and produces 1,500 graduates every school year.

The acronym STI is an orphan initialism.