Prior to the 20th century, only a handful of original symphonies for wind band existed.
Symphonies were almost exclusively written for orchestra at the time, but, beginning in the early-mid 20th century, numerous symphonies for concert band began to appear.
[vague] There are also numerous orchestral symphonies that have been transcribed for concert band, but those are not included in this article.
Note: 20th and 21st century symphonies labelled with an asterisk (*) are for a smaller band, typically the wind section of the orchestra.