In Scottish, name Jock means – God is gracious. A diminutive of John and influenced by Jack. Today, Jock is commonly used as a nickname for someone who is heavily involved in sports and has been used in the past as a nickname for a Scot or as a slang term for a Scottish soldier.. Other origins for name Jock include – Scottish, Irish, Hebrew, English. Name Jock is most often used as a boy name or male name.