French-styled short form of Jacques, from Hebrew Jacob meaning supplanter.
Jacq is a French-styled short form of Jacques, which itself comes from Hebrew Jacob and the long tradition associated with that name. The brevity gives it an immediate chicness, while the spelling makes it feel visually modern and slightly elegant.
It is the kind of clipped form that can look minimal but still carry substantial historical depth behind it. Because it is so compact, Jacq feels sharp, stylish, and a little unexpected. It has the advantage of being easy to remember while still retaining a sense of European refinement.
The unusual spelling gives the familiar name a more tailored edge, making it feel less like a nickname and more like a deliberate choice. Jacq has the neat paradox common to many short names: it looks modern, but it rests on a very old and durable biblical root.