Short for the woodwind family, woodwinds consist of the following sections piccolo/flute, clarinet, saxophone, and double reeds. The specific instruments include piccolo, flute, E♭ clarinet, B♭ clarinet, bass clarinet, alto saxophone, tenor saxophone, baritone saxophone, oboe, and bassoon. Less frequently seen but still very commonly used woodwind instruments include alto flute, A clarinet, soprano saxophone, contra-alto clarinet, contrabass clarinet, English horn, and contrabass bassoon.
The woodwind section is much more diverse than the brass section because they are responsible for the most of the variations in color in the band, and therefore require a greater variety of timbres.
A list of woodwind players in Hibike! Euphonium can be found here.