Trinity College (occasionally referred to as the University of Trinity College) is a federated college of the University of Toronto located on its St. George campus in downtown Toronto, Ontario, Canada. The college was founded in 1851 by Bishop John Strachan. Strachan originally intended Trinity as a university of strong Anglican alignment, after the University of Toronto severed its ties with the Church of England. After five decades as an independent institution, Trinity joined the university in 1904 as a member of its collegiate federation.

Today, Trinity College consists of a secular undergraduate section and a postgraduate divinity school which is part of the Toronto School of Theology. Through its diploma granting authority in the field of divinity, Trinity maintains legal university status. Trinity is one of the seven colleges in the University of Toronto Faculty of Arts and Science and hosts three of its undergraduate programs: international relations; ethics, society and law; and immunology.

More than half of Trinity students graduate from the University of Toronto with distinction or high distinction. The college has produced 43 Rhodes Scholars as of 2020. Among the college's more notable collections are a seventeenth-century Flemish tapestry, two first-edition theses by Martin Luther, numerous original, signed works by Winston Churchill, a 1491 edition of Dante's Divine Comedy censored by the Spanish Inquisition, and Bishop Strachan's silver epergne.

Among the University of Toronto Colleges, Trinity is notable for being the smallest by population, and for its trappings of Oxbridge heritage. Trinity manages its student government through direct democracy, and hosts a litany of clubs and societies.