Disclosed is an optical module configured to be provided to an end part of an optical cable. The optical module includes: a housing wherein, when the optical module side as viewed from the optical cable is defined as the front side and the opposite side therefrom is defined as the rear side, a front-side section of the housing is configured to be inserted into a cage, and a boot for protecting the optical cable extends from the rear side of the housing; a latch-releasing part attached slidably in the front/rear direction to the housing, the latch-releasing part having a projection for releasing a latched state established by a catch on the cage; a tab for pulling the latch-releasing part toward the rear to cause the projection to release the latched state established by the catch on the cage; and a push part that is to be pressed by an operator until the latched state is established, the push part having a rear end surface located more toward the rear than the boot.