A heat dissipation apparatus includes a retention module (10), a heat sink (20) disposed on the retention module, a fastening cover (23) covering the heat sink, and a plurality of fasteners (30) connected with the retention module and the fastening cover for mounting the heat sink onto a heat generating electronic component (50). The fastener includes a fastening member (31) and an operating member (32). The fastening member has a first end (313) engaged with the retention module and a second end (311) opposed to the first end. The operating member includes a resilient pressing portion (321) pivotably connected with the second end of the fastening member and contacting with the fastening cover, and an operation portion (322) connected with the pressing portion.