Regensburg Legionäre e.V., commonly referred to as Regensburg Legionäre, is a baseball and softball club from Regensburg, Bavaria. The team is currently known as Guggenberger Legionäre, being sponsored by a construction company from Mintraching. Between 2008 and 2020 the team was called Buchbinder Legionäre after a car rental company.
Founded in 1987, the first men's team plays in the first division of the Baseball-Bundesliga since 1995 and has won the German championship five times in 2008, 2010, 2011, 2012 and 2013. The Legionäre play in the Armin-Wolf-Arena.
In the 2010 season, Legionäre led the Southern Division in most offensive and defensive categories, posting a combined .367 batting average and hitting 21 home runs as a team, while the club's pitching staff posted a 2.21 ERA.