Chengdu J-9
 Chengdu J-9 (Chinese: 歼-9) was a designation assigned to a Chinese interceptor aircraft that never progressed beyond initial studies. The J-9 was scrapped in favour of the Shenyang J-8 which was a safer technological bet for the limited Chinese aviation industry of the 1960s and 1970s. The J-9 designation is frequently confused with the much later Chengdu FC-1 fighter which is sometimes informally referred to as J-9 by aviation enthusiasts.