Born in occupied Korea, Kang Shin-yeong attended Geonguk University, majoring in Korean Literature. He made his film debut in director Shin Sang-ok's Romance Papa in 1960 and has appeared in more than 500 movies since then. In his debut film, director Shin suggested the name Kang Shin-sung-il but that was subsequently shortened to simply Shin Sung-il which he used for his entire professional career. He has won several awards for best actor or best supporting actor for films such as Gajeong gyosa (1963) and Dalbit sanyang gun (1986). In 1979, he became the chairman of the Korean Actors League and held the position for several consecutive terms. After a long career as an actor and having directed and even produced, Shin Sung-il has retired from the film industry in favor of pursuing a career in politics. He was elected to the National Assembly where he remains to this day.
| Movie | A Year-End Medley | Yong-jin's Father | 2021-12-29 |
| Movie | Cold Eyes | Go-hyeol-ap (uncredited) | 2013-07-03 |
| Movie | Door to the Night | Jong-Sub | 2013-11-06 |
| Movie | Action Boys | Self | 2008-08-28 |
| Movie | A Day Off | Heo-wook | 2005-10-08 |
| Movie | Typhoon | President | 2005-12-14 |
| Movie | Festival | Hae Kwang | 1996-06-06 |
| Movie | General's Son 3 | 1992-09-11 | |
| Movie | Who Saw The Dragon's Claws? | Kim Eui-chang | 1991-04-05 |
| Movie | Beyond the Mountain | Jin-Gong | 1991-08-25 |
| Movie | Korean Connection | 1990-01-27 | |
| Movie | Mayumi: Virgin Terrorist | Investigator Lee | 1990-06-09 |
| Movie | Watercolors in Rain | Yang-boo | 1990-02-17 |
| Movie | A Forest Where a Woman Breathes | 1988-06-04 | |
| Movie | A Woman on the Verge | 1987-09-05 | |
| Movie | Gilsodom | Kim Dong-jin | 1986-04-05 |
| Movie | The Oldest Son | Lee Tae-yeong | 1985-06-22 |
| Movie | Come Down to a Lower Place | Ahn Shin-sam | 1982-06-26 |
| Movie | The Whereabouts of Eve | 1982-05-28 | |
| Movie | Night Journey | Park Dae-ri | 1977-04-23 |
| Movie | Winter Woman | Heo Min | 1977-09-27 |
| Movie | Hedgehog of the Third Dock | 살모사(정호) | 1977-11-04 |
| Movie | My Hometown | Min Jun-tae | 1976-01-31 |
| Movie | You Become a Star, Too | Sang-gyu | 1975-08-23 |
| Movie | Heavenly Homecoming to Stars | Moon-ho | 1974-04-26 |
| Movie | Lost Love | 1973-12-27 | |
| Movie | A Second Mother | Dong-o | 1972-01-13 |
| Movie | Gate of Woman | Hyo-jin | 1972-12-15 |
| Movie | Is Your Husband Like This Too? | 1971-03-17 | |
| Movie | The Midnight Sun | 박 | 1971-07-01 |
| Movie | Starting Point | 1969-02-02 | |
| Movie | The General's Mustache | Kim Chul-hoon | 1968-09-14 |
| Movie | Chulsaegado | 1968-09-22 | |
| Movie | Femme Fatale, Jang Hee Bin | King Sukjong | 1968-01-27 |
| Movie | Legends | 1968-03-01 | |
| Movie | Living in the Sky | 1968-10-02 | |
| Movie | Herb of Desire | 1968-11-23 | |
| Movie | The Eunuch | Jung-ho | 1968-12-10 |
| Movie | A Misty Grassland | 1967-03-17 | |
| Movie | The Starting Point | 1967-06-01 | |
| Movie | Why a Cuckoo Cries | 1967-07-28 | |
| Movie | Mist | Yun Gi-jun | 1967-10-18 |
| Movie | Green Rain | Cheol | 1966-06-10 |
| Movie | Horse-year Bride | Kim Geun-ho | 1966-01-01 |
| Movie | A Hero without a Serial Number | 1966-03-23 | |
| Movie | A Student Boarder | Park In-seok / Kang Min-gu | 1966-06-29 |
| Movie | I Am a King | Choi Yeong-cheol | 1966-09-15 |
| Movie | Gunsmoke | Jin-woo | 1966-12-08 |
| Movie | An Empty Dream | The male patient | 1965-07-03 |
| Movie | The Woman Coming in Fall | 1965-09-22 | |
| Movie | The Continental Spy | Wang-seong | 1964-05-22 |
| Movie | The Barefooted Young | Jo Doo-soo | 1964-02-29 |
| Movie | My Mind Is Like a Lake | 1964-06-27 | |
| Movie | Kinship | Geo-buk | 1963-10-03 |
| Movie | Tyrant Yeonsan | Prince Jin-seong | 1962-02-05 |
| Movie | Under the Sky in Seoul | Yeong-gil | 1961-12-15 |
| Movie | Prince Yeonsan | Prince Jin-seong | 1961-12-31 |
| Movie | Romance Papa | Barun | 1960-01-28 |
| Movie | To the Last Day | Park Sang-sa | 1960-07-01 |
| Movie | Madam White Snake | Seon Heo | 1960-10-02 |
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