Last night, Pratt was on hand at the Golden Globes where Ron Howard tweeted the confirmation as well as confirming Bryce Dallas Howard.
Pratt's role is unknown, but it was previously described as a lead.
Jurassic World has a June 12, 2015 release.
Pratt stars as Star-Lord in Guardians of the Galaxy out August 1st.
Bryce and Chris meet for the 1st time on red carpet they will be co-stars in next Juraissic pic.twitter.com/Pu1nUI9SNG— Ron Howard (@RealRonHoward) January 13, 2014