Blythe are Scottish kin group or family who do not have a recognised chief and are therefore considered an armigerous clan.
Blythe was an ancient barony in Lauderdale. The name is still common there. <ref>George Way of Plean and Romilly Squire, Scottish Clan and Family Encyclopedia, 364</ref>
The family may have Norman origins. William de Blyth rendered homage for lands in Chirnside in 1296. <ref>Plean, Squire, Encyclopedia, 365</ref>
The coat of arms recorded by Nisbet is thought to be ancient. However they have never been recorded in the registers of the Lyon Court. <ref>Plean, Squire, Encyclopedia, 366</ref>