Grzegorz Ciechowski (August 29, 1957 in Tczew - December 22, 2001 in Warsaw) was a Polish rock musician and film music composer.

Ciechowski was the founder and frontman of the band Republika, which was one of Poland's most popular rock groups. In the mid-1980s, Ciechowski took a break from the group and formed a new band called Obywatel GC (Citizen GC), again with considerable commercial success. At least a seven-song eponymous vinyl record, Obywatel G.C. exists, released by Tonpress KAW, copyright 1986. In 1991 Republika was revived, and Ciechowski was involved with a number of other ensembles, including Grzegorz z Ciechowa.