A table device for a seat, in particular for an aircraft seat, includes a table unit which is configured for being adjustable at least between a use position and a stowage position, and has at least one locking module which has at least one attachment unit which is configured for being at least in part fixedly connected to a seat component, wherein the table unit at least in the stowage position is lockable to the attachment unit. The locking module has at least two force-fit and/or form-fit elements, by means of which the table unit in a locked state is coupled in a form-fitting and/or force-fitting manner to the attachment unit.