Abstract: An integrated fin antenna apparatus is provided. The integrated fin antenna apparatus comprises a base, a first antenna module, a second antenna module, a third antenna module and a housing. The first antenna module is disposed vertically on the base. The second antenna module is parallel to the first antenna module and disposed vertically on the base. The second antenna module is spaced from the first antenna module by substantial 10 mm. The third antenna module is disposed on and parallel to the base, wherein the third antenna module is disposed on one end of the base relative to the first antenna module and the second antenna module. The third antenna is parallel to the base. The housing is covering the base to form an accommodating space with the base. The accommodating space is used to accommodate the first antenna module, the second antenna module and the third antenna module.