Comyn can refer to:
- Clan Comyn, another name for Clan Cumming.
People
- Dan Comyn, an Irish cricketer.
- Stephen George Comyn, Naval chaplain to Lord Nelson
- Valens Comyn, English MP
- William Leslie Comyn, Californian shipbuilder
Medieval Scottish lords
- John I Comyn, Lord of Badenoch, a 13th century Scottish peer
- John II Comyn, Lord of Badenoch, also known as John the Black
- John III Comyn, Lord of Badenoch, also known as John the Red
- John Comyn, Earl of Buchan, an opponent of Robert I of Scotland
- Alexander Comyn, Earl of Buchan, the guardian of Scotland in A.D. 1286
- William Comyn (Chancellor), 12th century chancellor of Scotland
- William Comyn, jure uxoris Earl of Buchan, fought the Meic Uilleim in the 12th century
- Walter Comyn, jure uxoris Earl of Menteith, another lord of Badenoch
- Richard Comyn, justiciar of Lothian
Places
- Newbold Comyn, a park in Leamington Spa, Warwickshire
- Comyn, Texas, Community located in Comanche County, Texas
In fiction
- Members of the planet Darkover's human aristocracy who exhibit special mental powers in Marion Zimmer Bradley's Darkover science fiction novels