A guide apparatus is provided which can increase a holding force that holds a table, a drawer, a cabinet, a device, or the like at a predetermined position. An engagement body (43) is placed on a second member (42b). A pair of plate spring portions (44a and 44b) is placed on a first member (41) in such a manner as to sandwich the engagement body (43). The pair of plate spring portions (44a and 44b) bend in such a manner that a minimum dimension between the pair of plate spring portions (44a and 44b) is smaller than a dimension (length) of the engagement body (43). In a state where the engagement body (43) has gone beyond a minimum dimension position (53) between the pair of plate spring portions (44a and 44b) and the second member (42b) is being held at a predetermined position on the first member (41), the minimum dimension between the pair of plate spring portions (44a and 44b) is smaller than the dimension (length) of the engagement body (43), and both end portions (44a1, 44a3, 44b1, and 44b3), in a length direction, of the plate spring portions (44a and 44b) are supported by the first member (41).