Do all woodwind instruments use the treble clef?

No, not all woodwind instruments use the treble clef. While some woodwinds, such as the flute, piccolo, and oboe, do use the treble clef, others use different clefs. For example, the clarinet uses the treble clef for its upper register and the bass clef for its lower register. The bassoon uses the bass clef, and the saxophone uses both the treble and bass clefs depending on its range.