Ulunma Nnenna "Nnenna" Agba, born 1985 in Houston, Texas, is a fashion model. Nnenna is best known as placing sixth on America's Next Top Model Cycle 6. Nnenna is also a chemist. She graduated from Texas A&M University with a B.A. in Chemistry in 2003.
Nnenna was consistently a front-runner in the competition. She won a total of four challenges, the most of the season.
Agba has been one of the most successful contestants after the show ended. She has modeled in Paris, London, New York, Berlin, South Africa, and Malaysia. Nnenna has walked in 2006, 2007 and 2008 fashion weeks. She has also modelled in Heatherette's Chocolate Show. Nnenna was also on the cover of Clam Magazine. She was also at the Clam Magazine exhibit sponsored by L'oreal Mizani in Paris. Nnenna has also been featured in Jewel Magazine. Nnenna has walked in the Victim Show. She recently appeared in one of Russia's leading pop singer Sergey Lazarev's recent music video.