Heptad ('group of 7') or heptade may refer to:
Heptad (chord), heptachord in music (set) Heptad (computing), a group of 7 bits in computing Heptad repeat, a structural motif in proteins L'Heptade, an album by Harmonium in 1976 Sechtae, or "Heptads", an early Irish legal text comprising lists of seven (heptads) See also Hexad (disambiguation) ('group of 6') Octad (disambiguation) ('group of 8')