A laminating apparatus, in which films can be heated sufficiently, has a simple structure and allows films to be loaded easily. The laminating apparatus includes a sheet feed mechanism unit configured to convey a sheet into an apparatus main body, a film supply unit, and a press-bonding mechanism unit configured to perform a thermal press-bonding process while sandwiching the sheet between a pair of films. A sheet feed unit including the sheet feed mechanism unit is appropriately changeable between an open state and a closed state. The film supply unit includes rollers at supply positions where the films sufficiently wind around heating rollers of the press-bonding mechanism unit. The sheet feed unit includes counter rollers configured to abut the rollers in the closed state and separate from the rollers in the open state.