Line 19 of the Hangzhou Metro () is a rapid transit line in Hangzhou, China. The line was opened on 22 September 2022.
The line has a length of , including underground section. There are 17 stations on the line, including 13 underground stations and 4 elevated stations. The line uses 6-car Type A rolling stock.
It connects Hangzhou West railway station, Alibaba headquarters, Hangzhou East railway station and Hangzhou Xiaoshan International Airport. The termini are Tiaoxi station and station. It crosses the Qiantang River on with the (originally ).