Carlo Karges (31 July 1951, Hamburg – 30 January 2002, Hamburg) was a German musician who became a guitarist and songwriter for the rock band, Nena. He wrote the lyrics of Nena's most famous song, "99 Luftballons", released in 1984. He was attending a 1982 Rolling Stones concert at the Waldbühne (the "Forest Theatre") in West Berlin, when they released a large mass of helium balloons into the air. He wondered how East German or Soviet forces might react if the balloons crossed the Berlin Wall, and thus he conceived the idea for the song about a major war resulting from misidentification of a mass of balloons.
Karges grew up with his single mother in Hamburg, and began as a student to play guitar and to compose songs. After he had gathered experience playing live in several different groups, including Tomorrows Gift and Release Music Orchestra, by 1971 he was the guitarist and keyboardist and founding member of Novalis.