- Full Name: Rosemary Wahu Kagwi Mathenge
- Categories: Musicians
- Gender: Female
- Birth Country: Kenya
- Date of Birth: March 22
Wahu, is a Kenyan Singer / Songwriter, former fashion model, actress and entrepreneur. She was a student at Precious Blood Secondary School, Riruta, where together with a friend, wrote her first song, "Showers of Blessings". The song is, to date, still part of the schools hymnal collection. On completion of her high school education, Wahu began working with various media houses on TV and radio jingles. The moneys from these short contracts went towards her university education at the University of Nairobi where she pursued a Bachelor’s degree in Mathematics. She officially began her musical career in 2000 and her first three singles were "Niangalie", "Esha" and "Liar". Wahu released her first major hit, "Sitishiki" around 2005. She is married to David Mathenge aka Nameless, another award-winning Kenyan musician and together they have two daughters.