There is provided a discharge head including: a tubular member that includes a flat portion with an oblate shape where a cross-section of a tube path extends in a first direction, the tubular member being formed so that the flat portion includes a first wall that is flat and has an actuator attached to an outside thereof and the flat portion becomes a cavity with an internal volume thereof varying due to displacement of the first wall; and a nozzle opening that is provided at one end of the tubular member and discharges a liquid substance due to variation in the internal volume of the cavity.