Fridolin Sicher (March 6, 1490 – June 13, 1546) was a Swiss composer and organist of the Renaissance.
He was born in Bischofszell and began his study of the organ at the age of 13 with Martin Vogelmaier, the organist of Konstanz Cathedral.
He returned to Bischofszell in 1537, where he was made both organist and chaplain of St Agnes Church.
His St Gallen Organ Book (compiled between 1512 and 1521) contains 176 mainly pieces, predominantly of sacred music, by over 90 Renaissance composers.
Of those pieces, 110 are transcriptions of vocal works including his own composition, Resonet in laudibus, as well as works by Busnoys, Josquin, Weerbeke, Agricola, Compère, Isaac, Brumel, La Rue, Mouton, Obrecht, Pipelare and others.