Chiba Lotte Marines

Chiba Lotte Marines
千葉ロッテマリーンズ
Logo Cap insignia
Information
LeagueNippon Professional Baseball
Pacific League (1950–present)
LocationMihama-ku, Chiba, Chiba, Japan
BallparkZOZO Marine Stadium
FoundedNovember 26, 1949 (1949-11-26)
Nickname(s)Kamome (鴎, seagulls)
Japan Series championships4 (1950, 1974, 2005, 2010)
PL pennants 5 (1950, 1960, 1970, 1974, 2005)
Playoff berths14 (1974, 1977, 1980, 1981, 2005, 2007, 2010, 2013, 2015, 2016, 2020, 2021, 2023, 2024)
Former name
  • Lotte Orions (1969–1991)
  • Tokyo Orions (1964–1968)
  • Daimai Orions (1958–1963)
  • Mainichi Orions (1950–1957)
Former ballparks
ColorsBlack, Grey, White
     
MascotMar-kun, Rine-chan, and Zu-chan
Retired numbers
OwnershipKatsumi Kawai
ManagementLotte Holdings
PresidentShunsuke Kosaka
General managerNaoki Matsumoto
ManagerSaburo Omura
Websitehttps://www.marines.co.jp/
Current uniforms

The Chiba Lotte Marines (千葉ロッテマリーンズ, Chiba Rotte Marīnzu) are a professional baseball team in the Pacific League based in Chiba City, Chiba Prefecture in the Kantō region of Japan and owned by Lotte Holdings Co., Ltd. The Marines were a founding member of the Pacific League in 1950 as the then-known Mainichi Orions when the Japanese Baseball League reorganized into Nippon Professional Baseball, where they won the inaugural 1950 Japan Series. Since 1992, the Marines' home ballpark has been the ZOZO Marine Stadium, located in the Mihama Ward of Chiba, with seats for up to 30,118 people.

The "Marines" name originates from the name of the ballpark, also officially named the Chiba Marine Stadium, because it is located at the seaside. Six players have won the Nippon Professional Baseball Most Valuable Player Award with the team; the last member to win the MVP was in 1985, the longest current drought for all twelve teams.

As of the end of the 2025 season, the franchise's all-time record is 4930-4928-408 (.500).