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
See also
edit- Hexad (disambiguation) ('group of 6')
- Octad (disambiguation) ('group of 8')