The Bruckner rhythm is a 2 + 3 (duplet + triplet) or 3 + 2 rhythm in Anton Bruckner's symphonic music, where it occurs prevalently, and in many different, varied ways.
One example is in the main theme of the first movement of his Symphony No. 4 in E-flat major, from bars 43 forward:
The Bruckner rhythm can occur separate of a melody (that is, on a single pitch), and this is the only way it occurs in the Symphony No. 2 in C minor. In the Symphony No. 6 in A major the Bruckner rhythm occurs to a much greater extent than in previous works, in several parts at slightly different times. At first it occurs as a string ostinato high in the violins' range against a melody of different rhythm in the cellos, while at bars 195 - 209 it serves to articulate hexatonic cycle block chords. The rhythm occurs in somewhat more "manageable" form in Symphony No. 8 in C minor, where it usually occurs in the same way in all the parts.
The Bruckner rhythm also occurs in the works of other composers, such as in Howard Hanson's Romantic Symphony, where it occurs mostly in the horns' and trumpets' parts.