There are 2 artists that go by Lil O. 1. Nickname for rapper OsamaSon. On streaming platforms, the nickname serves as his alternate account for hosting leaked songs. Owned and managed by his team. He has released 2 compilation mixtapes of previously leaked songs under the name. 2. Lil' O (born Oreoluwa Mitchell Magnus-Lawson; November 22, 1977 in Lagos, Nigeria) is a Nigerian-American rapper, raised in Southwest Houston, Texas. He is an original member of DJ Screw's Screwed Up Click. He was also known as O or Da Fat Rat Wit Da Cheeze. His name references his height, at 5 feet tall. <a href="https://www.last.fm/music/Lil%27+O">Read more on Last.fm</a>. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.