The 2019 China League One (Chinese: 58同城 2019中国足球协会甲级联赛) was the 16th season of the China League One, the second tier of the Chinese football league pyramid, since its establishment in 2004. The league's title sponsor was the e-commerce website 58.com. The season began on 9 March and concluded on 2 November. In order to expand the number of teams from 16 to 18 in 2020 season, this season will only directly relegate 1 team instead of 2 teams while 2 teams will enter relegation playoffs.