Jacek Kleyff (born 1st Aug 1947 in Warsaw, Poland) is a Polish singer, poet, composer, actor and painter. He was one of the founders of the Salon Niezależnych cabaret, and the main writer and composer for the very successful Polish reggae/sung poetry band Orkiestra Na Zdrowie (ONZ). He released several solo records, his best known songs being "Telewizja" (1972), "Huśtawki" (1973) and "Nie męcz mnie" (1974).