A heating cooking apparatus (1) includes a heating cooking chamber (10), heat supply units (41), (42), and (44), a housing (14), a fan (50), a pull-out body (13), a slide rail (30), and guide portions (52a) and (52c). The heat supply units (41), (42), and (44) supply heat to an interior of the heating cooking chamber (10). The housing (14) accommodates the heating cooking chamber (10). The fan (50) is disposed in a space (R) formed between an outer surface of the heating cooking chamber (10) and an inner surface of the housing (14). The fan (50) generates an air flow (BF). The pull-out body (13) can be freely pulled out relative to the heating cooking chamber (10). The slide rail (30) is attached to the outer surface of the heating cooking chamber (10). The slide rail (30) slidably supports the pull-out body (13). The guide portions (52a) and (52c) guide the air flow (BF) so that the air flow (BF) flows along the slide rail (30).