A liquid jet head includes: a nozzle plate including a nozzle array, the nozzle array including a plurality of nozzle holes each extending in a Z direction, the nozzle holes being arranged side by side in an X direction; a head chip disposed in a +Z direction with respect to the nozzle plate and including ejection channels communicating with the respective nozzle holes; a manifold disposed in a +Y direction with respect to the head chip, the manifold being configured to support the head chip by a face facing a −Y direction and including an ink flow path communicating with the ejection channels; and a drive board supported on the face facing the −Y direction of the manifold and electrically connected to the head chip.