Jens "Jeb" Bergensten (born 18 May 1979) is a Swedish video game designer.
Since December 2010, he has worked for the video game developer Mojang as a programmer and game designer.
He became the lead designer and lead developer of the indie sandbox game Minecraft, after Markus "Notch" Persson stepped down from his position in December 2011, and has led it on to become the best selling video game of all time.
In 2013 he made it onto the annual Time 100 most influential people in the world list.