Harold Loeffelmacher (March 14, 1905 – January 30, 1988[1]) was an American musician and bandleader best known for forming the polka band known as the Six Fat Dutchmen.

The band, based in New Ulm, Minnesota, traveled extensively and played as many as 335 dates per year, mostly in the Midwestern United States.

In winter while the other band members would break from their hectic schedules and take well-deserved vacations, Loeffelmacher would often continue to perform solo on the bass horn, but his true instrument was the trombone.

[3] In 1990, three years after his death, Harold Loeffelmacher and his Six Fat Dutchmen were inducted into the Minnesota Music Hall of Fame.

[citation needed] In 2006, 74 years after the band's founding, a compilation CD of the Six Fat Dutchmen's original recordings was produced.