Jean Daetwyler (24 January 1907, Basel – 4 June 1994, Sierre) was a Swiss composer and musician.
He is barely remembered, mostly for his largely forgotten works for alphorn inspired by Jozsef Molnar beginning in 1970.
Also inspired by trombonist Branimir Slokar [sl] and other aspects of Swiss culture.
Daetwyler was a pupil of Vincent d'Indy at the Paris Conservatoire.
His work was also part of the music event in the art competition at the 1948 Summer Olympics.