An optical module includes a circuit board having flexibility, a photoelectric conversion element mounted on a mounting surface of the circuit board, a semiconductor circuit element mounted on the mounting surface of the circuit board and electrically connected to the photoelectric conversion element, a plate-shaped optical connection member having a groove into which an end part of an optical fiber is pushed so as to be housed and optically connecting the optical fiber and the photoelectric conversion element, and a supporting member arranged so as to sandwich the optical connection member between the circuit board. The groove is formed between the semiconductor circuit element and the supporting member so as to have an opening into which the optical fiber is pushed at the supporting member side. The semiconductor circuit element has a height from the mounting surface of the circuit board higher than the photoelectric conversion element.