A head unit includes: a base extended in a first direction; a first head which is fixed to the base and includes a first nozzle plate; a second head which is fixed to the base, includes a second nozzle plate, and is configured to form dots in a line in the first direction with the first head; a first corrector configured to adjust arrangement of the first head with respect to the base, and disposed at a first side in a second direction orthogonal to the first direction with respect to the first head; and a second corrector configured to adjust arrangement of the second head with respect to the base, and disposed at a second side opposite to the first side in the second direction with respect to the second head. The first and second nozzle plates are disposed between the first and second correctors in the second direction.