Damian Stachowicz (b. 1658 in Sokołów; † November 27, 1699 in Łowicz) was a Polish composer.
Stachowicz entered the Piarist Order (Order of Poor Clerics Regular of the Mother of God of the Pious Schools) at the age of sixteen. He belonged to it throughout his life and worked as a teacher of poetry and rhetoric. He lived in Warsaw, Chełm, Piotrków Trybunalski, Góra Kalwaria, Łowicz and in Podoliniec, among other places. Of his church music works, several litanies, psalms and motets, a requiem and a Veni creator are preserved.