Incheon Subway Line 1 is a 30.3-kilometer (18.8 mi) north-south subway line, part of the Incheon Subway system. The line is also included as a part of the overall Seoul Metropolitan Subway network; Bupyeong Station has a free transfer with Seoul Subway Line 1, Gyeyang Station connects with the AREX Line which leads to Incheon International Airport and Seoul Station, Bupyeong-gu Office Station has a free transfer with Seoul Subway Line 7, and Woninjae Station has a free transfer with the Suin-Bundang Line.

The Incheon Subway is a subway system serving the South Korean city of Incheon. The system is operated by Incheon Transit Corporation, and is part of the greater Seoul Metropolitan Subway.