Seiji Tomashino
Infielder / Outfielder / Coach
Born: (1964-06-22)June 22, 1964 Ibaraki, Osaka, Japan
Batted: Right Threw: Right
NPB debut
June 22, 1983, for the Seibu Lions
Last appearance
October 12, 1997, for the Seibu Lions
NPB statistics (through 1997)
Batting average	.256
Hits	381
Home runs	18
Runs batted in	121
Stolen base	90
Teams
As player Seibu Lions (1983–1997) As coach Seibu Lions (1998–2007) Chunichi Dragons (2008–2011) Fukuoka SoftBank Hawks (2012–2014) Tohoku Rakuten Golden Eagles (2015, 2019–2020) Tokyo Yakult Swallows (2016–2017)

Seiji Tomashino (笘篠 誠治, Tomashino Seiji, born June 22, 1964 in Ibaraki, Osaka, Japan) is a Japanese former Nippon Professional Baseball infielder/outfielder. ^[1]

His younger brother Kenji is also a professional baseball player.