There is provided a mobile wireless terminal permitting the distance between the antenna and the human head can be kept relatively constant even if the angle formed by the case of the apparatus is varied, making it possible to ensure stable antenna performance.A mobile wireless terminal according to the invention is fitted to an upper case and has an antenna extensible from the upper case and, when that antenna is stowed in the upper case 1, the upper end of the upper case protrudes farther than the position of an 1/2 length of a coil section, which is the tip section of an antenna element positioned at the tip section of the antenna.