A lens apparatus is capable of adjusting only the inclination of an optical axis in a desired direction. A focus lens frame is movably supported by a first guide shaft and a second guide shaft. The first guide shaft is provided in a lens barrel with both end parts of the first guide shaft being fixed. A front end part of the second guide shaft is swingably supported, a rear end part thereof is fitted into a horizontal elongate hole, and the second guide shaft is movably supported only in a horizontal direction. The second guide shaft is inserted through a first elongate hole formed in a swinging frame, and when the swinging frame is swung, the second guide shaft is horizontally swung. Then, when the second guide shaft is horizontally swung, the focus lens frame is horizontally swung, whereby the horizontal inclination of the optical axis is adjusted.