Oluwaseun Temitope Osewa is a Nigerian programmer. He is the founder of Africa';s largest online forum, Nairaland, a popular internet forum launched in March 2005, which was projected as the biggest African forum by Forbes. He was listed among T.I.N Magazine';s top 10 most influential Nigerian online entrepreneurs in 2015. The website was the most visited African site until 2015.

Nairaland is which is estimated to be worth over N1.6billion was founded in 2005. He actually started out with web hosting in 2003 but that eventually folded up due to insufficient capital. But as it would turn out, you can never hold down a man with a dream for too long.

He created 3 online forums- one focusing on IT, another for students of higher institutions and the last one covering the emerging GSM market in Nigeria.

He later founded Nairaland to cater for more encompassing issues that appeal to wider spectrum of Nigerians.

The site grew and became a very successful brand. Seun was said to be earning as much as N6million in a month when Nairaland still uses google ads.