Sun Dong-yol (Hangul: 선동열; born January 10, 1963 in Gwangju, South Korea) is a retired pitcher in the KBO League and Nippon Professional Baseball, and the former manager of Kia Tigers in the Korea Professional Baseball. He holds the record for lowest Korea Professional Baseball career ERA, 1.20.

Upon graduation from Gwangju Il High School, Sun joined the Korea University baseball team in 1981.

In 1981, Sun competed for the South Korea national junior baseball team in the inaugural World Junior Baseball Championship. He tossed a six-hit complete game with 11 strikeouts in a 3-1 win over United States in Game 1 of the final. South Korea eventually won the inaugural championship by defeating USA 3–2 in Game 2 as well, and Sun shared the MVP Award with Team USA ace Todd Burns.

In 1982, Sun was called up to the South Korea national baseball team for the 1982 Baseball World Cup hosted by South Korea. He led Team Korea to its first champion in the event, posting a 0.31 ERA in 29.0 innings pitched and racking up 3 complete game wins. In South Korea's second game, Sun started against future MLB star Bill Swift in a matchup of pitchers and notched a five-hit complete game victory over Team USA, allowing only one run and posting 15 strikeouts. In South Korea's final game, he threw a complete game once again in a 5–2 win over Japan. He was eventually named the MVP and selected to the All-Star team as the best right-handed pitcher.

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