Locus iste (English: This place), WAB 23, is a sacred motet composed by Anton Bruckner in 1869.

The incipit, Locus iste a Deo factus est, translates to "This place was made by God".

[5] Peter Strasser suggests that the work reflects elements of architecture, such as in the symmetry of the da capo form and the use of motifs like building blocks.

[14] A. Crawford Howie notes further that the work "begins with Mozartian phrases, but soon introduces characteristic Brucknerian progressions".

Musicologist Anthony Carver notes here as in many of Bruckner's motets the "isolation of the bass part at structurally important points".

After a pause of half a bar, the tenor alone begins in sudden pp the middle section on a repeated note, imitated by soprano and alto.

Iso Camartin notes in an article dedicated to the work in the Neue Zürcher Zeitung: das unanfechtbare Geheimnis (the irreproachable mystery) appears as unfassbar (incomprehensible) and beunruhigend (disturbing),[8] described by Ryan Turner as "transparently chromatic".

The author of the program notes for an Oratorio Society of New York CD that includes the motet writes that the melisma "spins an ethereal spell".

[15] The author of the Oratorio Society notes concludes by stating that "Locus iste is a hauntingly beautiful work reminiscent of the quiet chapel it honored".