St. Bonaventure's College (commonly called St. Bon's) is an independent kindergarten to grade 12 Catholic School in St. John's, Newfoundland and Labrador, Canada.

John Thomas Mullock, took advantage of plans to build a smaller penal institution and purchased sufficient surplus stones to construct a Franciscan monastery.

In April 1857 the bishop laid the cornerstone of the college named after the Franciscan Order's most scholarly and famous theologian, St. Bonaventure.

Seven years later in 1865 the college began to admit secular students and, in 1889, the Irish Christian Brothers assumed administrative responsibilities for the school.

One of the more modern buildings on the campus is Holland Hall, which sits on the site of the school's former tennis courts (built 1931) which were previously Brother Strapp's "Cricket and Football Crease," affectionately known as "Bartie's Pitch.

[8] In 2018, Holland Hall was one of series of modernist buildings listed by the City of St. John's that could be considered for heritage status.

Former premier of Newfoundland and Labrador, Danny Williams, also attended St. Bon's, although he graduated from nearby Gonzaga High School.