A shelf supporting apparatus and a cooking appliance including a shelf supporting apparatus are provided. The shelf supporting apparatus may include a pair of fixing frames provided to face each other on opposite sides of a chamber which is opened and closed by a door; a pair of supports provided to have a length which is changeable in a frontward-rearward direction, the pair of supports being, respectively, coupled to the pair of fixing frames and having a shelf mounted thereon; coupling members provided on the pair of fixing frames and coupling the pair of supports to the pair of fixing frames to be position-changeable in the frontward-rearward direction; and a pair of connecting members that, respectively, connects the pair of supports and the door, and changing positions of the pair of supports in the frontward-rearward direction in conjunction with a rotation of the door.

A cooking appliance includes a cavity to provide a cooking chamber, a door to open and close the cooking chamber, a partition plate to partition the cavity into a first chamber and a second chamber, the partition plate facing the door in the closed state, and a burner assembly disposed in the second chamber to supply heated air into the first chamber.