De Gyeongin Expressway (snelweg nummer 120) (Koreaans: 경인 고속 도로, Gyeongin Gosok Doro) is een autosnelweg in Zuid-Korea. De snelweg is 24 kilometer lang en verbindt Seoel met Incheon. De snelweg werd geopend in 1968.
1 / Gyeongbu Expressway · 10 / Namhae Expressway · 12 / Muan–Gwangju Expressway · 12 / Gwangju–Daegu Expressway · 14 / Hamyang–Ulsan Expressway · 15 / Seohaean Expressway · 16 / Ulsan Expressway · 17 / Iksan–Pyeongtaek Expressway · 17 / Pyeongtaek–Paju Expressway · 20 / Saemangeum–Pohang Expressway · 25 / Honam Expressway · 25 / Nonsan–Cheonan Expressway · 27 / Suncheon–Wanju Expressway · 29 / Sejong–Pocheon Expressway · 30 / Seosan–Yeongdeok Expressway · 32 / Dangjin–Cheongju Expressway · 35 / Tongyeong–Daejeon Expressway · 35 / Jungbu Expressway · 37 / Second Jungbu Expressway · 40 / Pyeongtaek–Jecheon Expressway · 45 / Jungbu Naeryuk Expressway · 50 / Yeongdong Expressway · 52 / Gwangju–Wonju Expressway · 55 / Jungang Expressway · 60 / Seoul–Yangyang Expressway · 65 / Donghae Expressway · 100 / Capital Region First Ring Expressway · 102 / Namhae Expressway Branch 1 · 104/ Namhae Expressway Branch 2 · 105/ Namhae Expressway Branch 3 · 110/ Second Gyeongin Expressway · 120/ Gyeongin Expressway · 130/ Incheon International Airport Expressway · 151/ Seocheon–Gongju Expressway · 153/ Pyeongtaek–Siheung Expressway · 171/ Osan–Hwaseong Expressway · 171/ Yongin–Seoul Expressway · 173/ Iksan–Pyeongtaek Expressway Branch · 202/ Saemangeum–Pohang Expressway Branch (Pohang) · 204/ Saemangeum–Pohang Expressway Branch (Iksan-Wanju) · 251/ Honam Expressway Branch · 253/ Gochang–Damyang Expressway · 255/ Gangjin–Gwangju Expressway · 292/ Sejong–Pocheon Expressway Osong Branch · 300/ Daejeon Southern Ring Expressway · 301/ Sangju–Yeongcheon Expressway · 400/ Capital Region Second Ring Expressway · 451/ Jungbu Naeryuk Expressway Branch · 500/ Gwangju Ring Expressway · 500/ Jungang Expressway Branch · 600/ Busan Ring Expressway · 700/ Daegu Ring Expressway ·
