The Lansing Lugnuts are a Minor League Baseball team of the Midwest League and the High-A affiliate of the Oakland 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 be 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.

Since 2007, the Lansing Lugnuts have participated in an annual exhibition game with nearby Michigan State University which draws a large crowd of students to the event. The overall record and attendance for each game is as follows:

Jesse Goldberg-Strassler broadcasts Lugnuts home and away games on WVFN-AM. WVFN previously aired Lugnuts games from 2001 to 2003.

Lugnuts games also aired on WJIM-AM from 1996 to 2000 and WQTX-FM from 2004 to 2016. Several games per season aired on WLNS-TV from 1996 through 2001. From 2002 to 2009, one game aired each season on WILX-TV.

The following are players in Major League Baseball who played, at one time, for the Lugnuts. This partial list includes players making injury-comeback starts as well as those that developed in Lansing.