Locus iste (English: This place), WAB 23, is a sacred motet composed by Anton Bruckner in 1869. The text is the Latin gradual Locus iste for the annual celebration of a church's dedication. The incipit, Locus iste a Deo factus est, translates to "This place was made by God". Bruckner set it for four unaccompanied voices, intended for the dedication of the Votivkapelle (votive chapel) at the New Cathedral in Linz, Austria, where Bruckner had been a cathedral organist. It was the first motet that Bruckner composed in Vienna. It was published in 1886, together with two other gradual motets.
As a composition with no obvious technical difficulty, it has been performed by church choirs and by professionals, often to celebrate church dedications.