Feliks Nowowiejski (7 February 1877 – 18 January 1946) was a distinguished Polish composer, conductor, concert organist, and music teacher. Born in Wartenburg, Warmia, in the Prussian Partition of Poland, Nowowiejski was the fifth of eleven siblings in a family deeply rooted in Warmia. His father, Franz Adam Nowowiejski, was a master tailor and a proponent of Polish culture, while his mother, Katharina Falk, a German, nurtured his musical talents.

Nowowiejski's formal music education began at the monastery school in Święta Lipka, where he studied various instruments and harmony. Financial difficulties forced him to leave school and support his family, leading him to work with the Prussian grenadier regiment orchestra. He furthered his studies at the Stern Conservatory in Berlin and the school of church music in Regensburg, studying under notable instructors like O. Dienel and M. Bruch. He received the prestigious G. Meyerbeer Prize twice, which funded his artistic travels across Europe and North Africa.

In 1906, Nowowiejski moved to Berlin, where he became an active figure in the Polish musical community and performed widely. His oratorio "Quo Vadis" gained international acclaim, being performed over 200 times by 1939. In 1909, he settled in Kraków, contributing significantly to its musical scene until World War I, which he spent in Berlin.

After the war, Nowowiejski relocated to Poznań, where he played a vital role in the city's cultural revival. He taught at the conservatory, conducted choirs, and organized significant musical events. His composition "Rota," set to the words of Maria Konopnicka, became a celebrated patriotic song. Nowowiejski continued to compose and perform until his death in Poznań in 1946, leaving behind a legacy of influential works and contributions to Polish music.