Shohei Ohtani (Japanese: 大谷 翔平, Hepburn: Ōtani Shōhei; pronounced [oːtaɲi ɕoːheː], /ˈʃoʊheɪ oʊˌtɑːniː/ SHOH-hey oh-TAH-nee; born July 5, 1994) is a Japanese professional baseball designated hitter and pitcher for the Los Angeles Dodgers of Major League Baseball (MLB). Nicknamed "Shotime", he has previously played in MLB for the Los Angeles Angels and in Nippon Professional Baseball (NPB) for the Hokkaido Nippon-Ham Fighters. Because of his contributions as a hitter and as a pitcher, a rarity as a two-way player, Ohtani's prime seasons have been considered among the greatest in baseball history, with some comparing them favorably to the early career of Babe Ruth.

Considered early on as an elite two-way player, Ohtani was the first pick of the Fighters in the 2012 NPB draft. He played for the Fighters from 2013 through 2017 as a pitcher and an outfielder and won the 2016 Japan Series with them. The Fighters posted Ohtani to MLB after the 2017 season, and he signed with the Angels, soon winning the 2018 American League (AL) Rookie of the Year Award. Following an injury-plagued 2019 and 2020, Ohtani hit 46 home runs and struck out 156 batters en route to winning his first AL Most Valuable Player Award (MVP) in 2021. For his statistically unprecedented two-way season, Ohtani received the Commissioner's Historic Achievement Award. In 2022, he became the first player in the modern era to qualify for both the hitting and pitching leaderboards in one season, finishing third in the AL with 219 strikeouts as a pitcher.

Ohtani won his second AL MVP in 2023, leading the AL with 44 home runs while recording 10 wins as a pitcher. He became the first player to win multiple unanimous MVPs and the first Japanese-born player to win a league home run title. After the 2023 season, Ohtani signed a 10-year, $700 million contract with the Dodgers, then the largest contract in professional sports history. Since 2023, Ohtani's jerseys have sold more than any other player in the U.S., Japan and worldwide. Unable to pitch in 2024 while recovering from a second elbow injury, Ohtani played as a DH for the Dodgers. He became the first player in MLB history to record 50 home runs and 50 stolen bases in a season and was unanimously named the 2024 National League (NL) MVP. He won the 2024 World Series in his first MLB postseason appearance. Ohtani returned to pitching in 2025 and set a Dodgers franchise record with 55 home runs in a season. He was named the 2025 NLCS MVP after hitting three home runs and pitching six shutout innings with 10 strikeouts in Game 4 en route to capturing back-to-back championships in the 2025 World Series.

Internationally, Ohtani represents Japan. At the 2023 World Baseball Classic, he led Team Japan to their third championship and was named the tournament's MVP. The 2023 final against the United States was one of the most-watched baseball games in history, culminating with Ohtani striking out Angels teammate and U.S. captain Mike Trout on a full count, securing a 3–2 win.

Ohtani was born to Kayoko and Toru Ohtani in Mizusawa (now part of Ōshū), Iwate, Japan, on July 5, 1994. His mother Kayoko was a national-level badminton player in high school and his father Tōru (徹), who worked at a local automobile manufacturing plant, was an amateur baseball player who played in the Japanese Industrial League.

Ohtani is the youngest of three children. He has one older sister, Yuka, and one older brother, Ryuta (龍太), who is also an amateur baseball player in the Japanese Industrial League.

In Japan, Ohtani was known as a "yakyū shōnen" (野球少年; "baseball boy")—a kid who lives, eats and breathes baseball. Coached by his father, he displayed an aptitude for the game at an early age. He began playing baseball in his second year of elementary school, and as a seventh-grader, Ohtani recorded all but one of 18 outs in a six-inning regional championship game.

As a teenager, Ohtani could have played baseball for any powerhouse high school team in big cities such as Osaka or Yokohama. Instead, he opted to stay local, selecting Hanamaki Higashi High School in Iwate Prefecture, Northern Japan, the same high school as pitcher Yusei Kikuchi, whom he admired; Ohtani competed there as a swimmer and played baseball. Ohtani's high school baseball coach, Hiroshi Sasaki, said that he was a fast swimmer who could have competed in the Olympics.