Provided is a liquid jet head in which a region of the liquid jet head on a side opposite to a liquid ejection side thereof is thinned to enhance efficiency of use of the region. A liquid jet head (1) includes an ejecting portion (3) for ejecting liquid in which first and second head chips (2a and 2b) are stacked, a circuit board (4) for supplying a drive signal for driving the ejecting portion (3), a first flexible printed circuit board (5a) for electrically connecting the first head chip (2a) and the circuit board (4) to each other, and a second flexible printed circuit board (5b) for electrically connecting the second head chip (2b) and the circuit board (4) to each other. The circuit board (4) and each of the first and second flexible printed circuit boards (5a and 5b) are electrically connected to each other on one surface (S) of the circuit board (4).