Midfield pair Brad Davis and Adam Moffat and goalkeepers Tally Hall and Tyler Deric have all penned new deals with the Dynamo who for the second season in a row were beaten in the MLS Cup final by the LA Galaxy.
"I am very happy that these four players decided to re-sign and stay in Houston," said Dynamo head coach Dominic Kinnear. "It makes us a stronger team for many years to come."
President Chris Canetti added: "All four of these players are key pieces to our team. It's great to know that we have them secured under contract into the future. I look forward to watching them perform and contribute in 2013 and beyond."