Lansing Lugnuts
Founded in 1955 in Lafayette, Indiana Based in Lansing, Michigan since 1996
Team logo Cap insignia
Minor league affiliations
Class	High-A (2021–present)
Previous classes	Class A (1955–2020)
League	Midwest League (1955–present)
Division	East Division
Major league affiliations
Team	Oakland Athletics / Athletics (2021–present)
Previous teams	Toronto Blue Jays (2005–2020) Chicago Cubs (1999–2004) Kansas City Royals (1995–1998, 1969–1976) San Diego Padres (1990–1994) Co-op (1989) Cleveland Indians (1977–1988, 1955) Boston Red Sox (1956–1968)
Minor league titles
League titles (9)	1958 1959 1960 1975 1976 1980 1986 1997 2003
First-half titles (4)	1999 2008 2012 2015
Second-half titles (1)	1996
Team data
Name	Lansing Lugnuts (1996–present)
Previous names	Springfield Sultans (1994–1995) Waterloo Diamonds (1989–1993) Waterloo Indians (1977–1988) Waterloo Royals (1970–1976) Waterloo Hawks (1958–1969) Lafayette Red Sox (1956–1957) Lafayette Chiefs (1955)
Colors	Red and silver
Mascot	Big Lug
Ballpark	Jackson Field (1996–present)
Previous parks	Lanphier Park (1994–1995) Riverfront Stadium (1958–1993) Loeb Stadium (1955–1957)
Owner/ Operator	Diamond Baseball Holdings
General manager	Zac Clark[1]
Manager	Darryl Kennedy
Website	milb.com/lansing

The Lansing Lugnuts are a Minor League Baseball team of the Midwest League and the High-A affiliate of the Athletics. They are located in Lansing, Michigan, and play their home games at Jackson Field.

The Midwest League came to Lansing after owners Tom Dickson and Sherrie Myers moved the team to work with the city for a public-private lease to build a new stadium. Mayor David Hollister, and the City Council worked to attract the owners and build the stadium for downtown economic development. The team began playing in downtown Lansing in 1996. The franchise began as the Lafayette Red Sox in Lafayette, Indiana, in 1955; after two seasons it became the Waterloo Hawks, moving to Waterloo, Iowa, where it stayed for 36 seasons. Before the 1994 season it moved to Springfield, Illinois, but only spent two seasons there before moving to Lansing. The franchise was an affiliate of the Kansas City Royals on two occasions in three cities: as the Waterloo Royals^[2] from 1969 through 1976, as the Sultans of Springfield in 1995, and then, upon the team's move to Lansing, from 1996 through 1998. The Lugnuts were then an affiliate of the Chicago Cubs from 1999 through 2004 before joining the Jays' farm system for the 2005 season. In September 2014, the Jays extended their agreement with the Lugnuts through the 2016 season.^[3] In October 2016, their player development contract was extended through the 2018 season.^[4] Since 2021, they have been the High-A affiliate of the Oakland Athletics.

The Lugnuts' ballpark, Jackson Field, opened in 1996. The stadium seats over 10,000 fans and is one of the most handicapped accessible stadiums in the country. The franchise attendance record of 538,326 was set during its inaugural year. They won the Midwest League Championship in 1997 and 2003. The Lugnuts have their own original song which plays immediately after the national anthem for every home game accompanied by their mascot, Big Lug.

In conjunction with Major League Baseball's restructuring of Minor League Baseball in 2021, the Lugnuts were organized into the High-A Central.^[5] In 2022, the High-A Central became known as the Midwest League, the name historically used by the regional circuit prior to the 2021 reorganization.^[6]