An optical fiber array is formed by including m number of optical fibers (where, m is a natural number other than 0), an optical fiber aligning member on a surface of which, at least m number of grooves are formed in parallel, and a cover. An end portion of the optical fiber is disposed in the groove of the optical fiber aligning member, and is held by the optical fiber aligning member and the cover. Furthermore, when being held by the optical fiber aligning member and the cover, by setting a line segment which has connected a point on an outer periphery in contact with the cover, of the optical fiber to be a straight line, the optical fiber is supported at three points by the groove and the cover. Moreover, by setting an angle of formation of the groove to be constant for all the grooves, and by setting arbitrarily a depth of the groove to differ, and by setting arbitrarily a cladding diameter of the optical fiber arranged in the groove, a line segment which has connected a center of each of the m number of optical fibers disposed in the groove is set to be an arbitrary non straight line shape.